SLOP8364 · Week 7 The tyranny of labels Best before, use by, and who decides
Dr Casper Nowak
~2 min (0:00)
First lecture after the break, and the first of mine — most of this room has
had Simone for six weeks. Say who you are and say what changes.
What changes is the register . Weeks 1–6 read the fridge interpretively:
hierarchy, classification, performance. Good work, and unfalsifiable in
places. From today the argument becomes measurable , and it stays that way
through weeks 8 and 9.
That is not a change of subject. It is the same argument arriving at the
point where it can be checked. Say so — the students who found the first six
weeks too soft need to hear it, and the ones who loved the first six weeks
need to know nothing is being repudiated.
Two hours, break at the hour.
One of these is an instruction. The other is an opinion. ~1 min (0:02)
The whole lecture in two lines. Do not say which is which yet.
Almost nobody in the room knows. That is not their failure and it is worth
being explicit about that now, because the next fifteen minutes will
demonstrate it to them and it should land as evidence, not as embarrassment.
Opening SLOP8364 · WK 7
Four labels. Would you eat it?# Every one of those dates has passed . Hands up for each: eat, or bin?
Plain yoghurt, opened two days ago BEST BEFORE 12 MAR
Washed salad leaves, unopened USE BY 12 MAR
Dried pasta, unopened BEST BEFORE MAR 2029
Hard cheese, wrapped BEST BEFORE 12 MAR
~7 min (0:03)
Do not explain anything first. Verdict before theory — this is the same
sequence as the Label Decoder on the session page, and it works for the same
reason: watching yourself do it is much stronger than being told you do it.
Take the four one at a time and count the hands . Write the counts on the
board. You will use them at 0:20 and again at the end.
What reliably happens, across years:
yoghurt — a real split, often close to even. People are genuinely
unsure.salad — most people bin it, and they are right, though almost nobody
can say why beyond “it says use by.”pasta — nearly everyone eats it. Note this: the room overrides a
printed date without hesitation the moment the date is obviously absurd.
Hold that; it proves the judgement is still in there.cheese — split, and often the most heated. Somebody always mentions
cutting mould off, and somebody always objects. Do not correct anybody yet. Let the wrong answers stand for fifteen minutes.
Opening · The four verdicts 1 of 4
Yoghurt BEST BEFOREA quality prediction Not a safety limit.
Yoghurt is cultured and acidic — an environment actively hostile to the organisms that make people ill.
Past this date it gets tangier , not dangerous.
~3 min (0:10)
Take the reveals one at a time and keep them quick.
The mechanism is worth a sentence: fermentation is a preservation
technology. The lactic acid bacteria have already acidified the product and
are actively occupying the niche a pathogen would need. Callback to week 1 —
this is a fermented food, which is to say it is food somebody already
steered the decay of, and we are now printing an expiry date on the steering.
The line to use: your nose is better informed about this tub than the printer
was, because the printer never met this tub.
Opening · The four verdicts 2 of 4
Salad leaves USE BYRespect this one Ready-to-eat leaves are the genuine high-risk case:
Nothing here will be cooked — there is no kill step Some pathogens grow at refrigerator temperature The bag is a sealed, humid, ambient-nutrient environment ~3 min (0:13)
Be emphatic. The lecture is not “ignore all dates,” and if half the room
leaves believing that, the lecture has failed and somebody may get ill.
The science that matters, and it is the reason the use by category exists
at all: Listeria monocytogenes grows at refrigeration temperatures. Most
pathogens are slowed to near-nothing by 4 °C. Listeria is not. So a
ready-to-eat food, held cold, with no cooking step between the bag and the
mouth, has a genuine microbiological clock on it — and that clock is not
visible, does not smell, and does not change the taste.
That last point is the crucial one and it inverts the rest of the lecture:
this is the one case where your senses genuinely cannot help you. Which
is exactly why a printed date earns its authority here, and exactly why
spending that authority on dried pasta is such an expensive mistake.
Opening · The four verdicts 3 of 4
Dried pasta BEST BEFORE MAR 2029A formality Shelf-stable, low moisture, close to inert. It will comfortably outlast the packet it came in.
A date printed because the format expects a date — not because anything happens on it.
~2 min (0:16)
Quick. This is the room’s easiest call and the most revealing one.
Ask them directly: why did you all override this date without a second
thought? The answer, when it comes, is that the date was so implausible it
lost its authority. Which means the room is running a plausibility check on
printed dates all the time — competently — and only defers when the date
falls inside the range where it cannot tell.
The date label’s power is therefore not absolute. It is concentrated exactly
where uncertainty is, which is exactly where it does the most damage.
Opening · The four verdicts 4 of 4
Hard cheese BEST BEFOREA date on a preservation technology Low moisture. Salted. Deliberately aged.
Ageing is the point of it.
Surface mould cuts away, and the rest is cheese.
~2 min (0:18)
The best joke in the module and worth landing properly: we have printed an
expiry date on a substance whose entire method is controlled ageing.
Straight back to week 1 — nobody invented cheese by trying to keep milk
cold. Simone will have used that line in week 1 and most of the room will
remember it. Cheese is decay that somebody steered, and the date label treats
the steering as if it were the spoiling.
Hard cheese only. Do not extend this to soft or fresh cheeses — different
moisture, different risk, and somebody will quote you at a dinner party.
3 /4
Three of those four dates told you nothing about safety. Same typeface. Same position. Same format. Same air of authority.
~3 min (0:20)
Back to the counts on the board. Read them out against the answers.
Do the arithmetic out loud: of four labels, exactly one carried safety
information. The other three were opinions about quality, printed in the same
typeface, in the same position, in the same format, with the same air of
authority.
Then the question that opens the rest of the lecture, and let somebody in the
room answer it rather than answering it yourself:
If only one in four of these dates means what people think it means — is
that a design failure, or is it working?
Module 3 · The tyranny of time SLOP8364 · WK 7
Where this week sits# Inherited from week 6
The household performs competence on the door.
This week
Who wrote the standard that competence is measured against?
~3 min (0:23)
Name the inheritance explicitly. This course does not reset weekly and week 7
is where the accumulation starts to pay.
Week 6 (Goffman, the door as front stage): the household stages a
performance of being the kind of household that manages itself well. Fine.
But a performance of competence is measured against a standard , and week
6 never asked where the standard came from.
Here it is. The standard is a number, printed by a party the household never
meets, whose interests are not the household’s, and which the household has
no means of auditing. Competence has been redefined as compliance with it.
Forward pointer: week 8 measures what that compliance costs, and it is the
week where the whole course’s thesis either survives or does not.
Part one What the two labels actually mean# ~1 min (0:26)
Gear change into the law. Tell them this section is dry on purpose and short,
and that the payoff is in part two.
Part one · What the labels mean SLOP8364 · WK 7
Best before# A prediction about quality .
“Estimate” A forecast, not a measurement. Nobody tested this jar.
“The manufacturer’s” The party estimating has a commercial interest in the answer.
“At its best” An aesthetic judgement wearing a numeric costume.
After this date, food is in the overwhelming majority of cases entirely edible.
~4 min (0:27)
Three things to draw out.
“Estimate” — it is a forecast, not a measurement. Nobody tested this jar.
They tested a batch, under standard conditions, and extrapolated.
“The manufacturer’s” — the party making the estimate is the party with a
commercial interest in the answer. Not a regulator, not a food scientist
acting independently. Part two is entirely about that.
“At its best” — an aesthetic judgement wearing a numeric costume. Best by
whose standard? Biscuits soften, bread stales, coffee flattens, spices fade.
All true, none of it a safety claim, and all of it a matter of degree that a
single hard date cannot express.
Ask: what would it even mean for a jar of honey to have a best before ? It
is the standing counter-example — an essentially immortal food that still
carries a date because the format demands one.
Part one · What the labels mean SLOP8364 · WK 7
Use by# A statement about safety .
Not in it
Dry goods, tinned goods, most preserves, hard cheese, most condiments, frozen food — the bulk of an ordinary pantry.
In the category
Washed salads, cut fruit, soft cheeses, pâté, cooked sliced meats, sandwiches, some smoked fish, fresh meat, poultry and fish.
The category is narrow . Inside it, treat the date as an instruction.
~4 min (0:31)
The word doing the work is narrow , and the room consistently over-reads
how wide the category is.
What is actually in it: ready-to-eat chilled foods where there is no cooking
step and where pathogens can grow at fridge temperature. Washed salads, cut
fruit, soft cheeses, pâté, cooked sliced meats, sandwiches, some smoked fish,
fresh raw meat and poultry, fresh fish.
What is not: dry goods, tinned goods, most preserves, hard cheese, most
condiments, frozen food, and the overwhelming bulk of what is in an ordinary
pantry.
Repeat the safety line so it is unambiguous on the recording: when
something carries a use by date, treat it as an instruction. Not because
the printer is trustworthy in general, but because in this specific category
your senses genuinely cannot detect the hazard.
Part one · What the labels mean SLOP8364 · WK 7
What the law actually requires# In Australia and New Zealand , the Food Standards Code separates the two,
and the separation has teeth.
It is an offence to sell food after its use by date
Criminal liability It is legal to sell food after its best before date, provided the food is still fit
No deadline Foods with a shelf life of two years or more need no date mark at all
No mark required FSANZ Food Standards Code, Standard 1.2.5. Check the current wording — it has been amended, and will be again.
~5 min (0:35)
FSANZ Food Standards Code, Standard 1.2.5 — date marking. Check the current
wording before you present; it has been amended and will be again.
The second row is the one that stops the room, so pause on it. Selling food
past its best before date is lawful . The date is not a legal deadline for
anyone. And yet the near-universal retail practice is to pull and destroy
that stock, which means an enormous volume of food is discarded in compliance
with a rule that does not exist.
The third row is quietly devastating: the regulator’s own view is that plenty
of food does not need a date at all. Look at how much of it carries one
anyway.
Two useful asides if there is time — bread with a short shelf life can be
marked baked on or baked for instead, which is a date that describes
history rather than pretending to predict the future; and the EU’s
Regulation 1169/2011 draws the same quality/safety line in different words
(“date of minimum durability”), so this is not an Australian idiosyncrasy.
Tell them: your jurisdiction’s actual text is exactly what Wednesday’s
tutorial makes you look up. Do not take my summary as the citation.
The law distinguishes them sharply. The packet does not. USE BY 12 MARSafety instruction. Offence to sell past it.
BEST BEFORE 12 MARQuality estimate. Legal to sell past it.
~3 min (0:39)
The hinge of the first hour.
Two legally distinct categories — one a safety instruction with criminal
liability attached, one a marketing estimate with none — are printed in the
same place, the same size, the same typeface, with the same air of
officialdom, on the same shelf.
Nothing about the physical presentation encodes the distinction the law
considers important enough to prosecute.
Ask: if you genuinely wanted people to tell these apart, what would you do?
Answers come fast — colour, symbol, separate position, plain-language
sentence, drop the quality date entirely. All cheap. All obvious. None
standard.
A problem this easy to fix, left unfixed for decades, is worth explaining.
That is part two.
Legally distinct. Governed differently.
Read by almost everyone as the same thing:
a deadline, printed by somebody who knows.
~2 min (0:41)
Read it. Let the last clause sit — printed by somebody who knows.
That phrase is the transferred authority in six words. The household assumes
expertise, assumes disinterest, and assumes the number is about the food.
Part two takes all three assumptions apart.
Part two Follow the incentive# Part two · Follow the incentive SLOP8364 · WK 7
Why print a date earlier than the food requires?# Limits liability A date too early costs nothing. A date too late is a claim, a recall, a headline.
Protects the brand A customer eating something stale blames the label’s owner, not the calendar.
Supports shelf-space negotiation Minimum-life-on-receipt terms ripple back up the chain from the retailer.
Accelerates turnover Discard on schedule, replace on schedule. Nobody has to plan it.
~6 min (0:44)
Take the four separately and make the room supply the reasoning where you
can.
Liability. Asymmetric risk. If the date is too early, nothing happens to
the manufacturer — the food is thrown away in somebody else’s kitchen and
nobody attributes it to them. If it is too late, there is a claim, a recall,
a headline. Rational risk management under that asymmetry produces
conservative dates, every time, with no bad actor required.
Brand. Subtler and probably larger in practice. A customer who eats
something stale does not blame themselves for storing it badly. They blame
the product. So there is a direct commercial interest in a date early enough
that nobody ever meets the product at less than its best — the date is a
quality-control instrument aimed at brand perception.
Shelf-space negotiation. A longer stated shelf life is a bargaining chip
with retailers, and retailers impose their own minimum-life-on-receipt
requirements that ripple back up the chain. Note that this is a business-to-
business negotiation whose outcome is printed on a consumer product.
Turnover. The blunt one. A household that discards on schedule buys on
schedule. Do not overstate this as conspiracy — say plainly that it does not
need to be anyone’s plan for it to be everyone’s incentive.
Then the methodological point, which is the transferable skill: I have not
alleged that anybody did anything wrong. I have described a structure of
incentives and shown that it has a direction. That is what political
economy is for — it explains outcomes without requiring villains, which is
also why it is harder to argue with.
At no step is anyone paid to print it later. A number with a systematic bias and no opposing party is not an estimate. It is a position .
~2 min (0:50)
The sentence they should leave with. Silence either side.
Every actor in the chain faces a cost for a date that is too late and no cost
for one that is too early. There is no counterweight anywhere in the system.
Ask, and genuinely wait: who in this chain represents the interest in the
date being accurate? The answer is nobody. Not the manufacturer, not the
retailer, not the regulator whose mandate is safety rather than waste. The
household bears the cost of inaccuracy and has no seat at the point where the
number is chosen.
A number with a systematic bias and no opposing party is not an estimate. It
is a position .
Part two · Follow the incentive SLOP8364 · WK 7
So what is the number, actually?# It looks like a fact about
The food
It is a fact about
Liability, brand management, and regulatory caution
And obeying it costs households money and costs the world food.
~4 min (0:52)
Consolidate before the break; this is the first-hour summary.
The substitution to make explicit: they believe they are reading a
measurement of the food, and they are in fact reading a summary of the
commercial and legal position of the firm that sold it. Same digits, entirely
different referent.
This is also the sentence that makes the week’s essay topic work, and the one
students most often paraphrase badly — they turn it into “companies lie about
dates,” which is weaker, less accurate, and easy to refute. The claim is
about what the number is a fact about , not about honesty.
Leave the counts from the opening on the board over the break.
Break — ten minutes.# We resume at the hour. (0:56) — 10 min
Take it properly. The second hour is the argumentative half.
Be at the front. This is the lecture where people come up with a specific jar
from their own kitchen, and those conversations are worth more than anything
on these slides. Several become Final Project proposals.
Remind anyone who asks: the Fridge Ethnography was due Friday 2 April, before
the break. If theirs was not ready, they email Simone now, not in week 9.
Part three Manufactured anxiety# ~1 min (1:06)
Restart hard. One line of recap: the date is a fact about the firm, not the
food, and every incentive points the same way.
Part three · Manufactured anxiety SLOP8364 · WK 7
The blur is not a bug# The argument, as an inference — not as an accusation:
1 The confusion is well documented, and has been for decades
2 Remedies are cheap, obvious, and repeatedly proposed
3 The confusion produces turnover, which benefits the parties who control the presentation
4 Those parties have not adopted the remedies
Not intent. Revealed preference — which is the stronger claim, because it does not depend on anybody’s state of mind.
~4 min (1:08)
Make the inference structure explicit, because this is the step a hostile
reader will attack and the students need to see it done carefully.
The argument is not “somebody designed the confusion.” It is the four steps
on the slide.
You cannot get intent from that. You can get revealed preference , and
revealed preference is the stronger claim anyway because it does not depend
on anybody’s state of mind.
Be honest about the counter-argument, and say it before they do: label
formats are also slow to change for boring reasons — regulatory inertia,
packaging costs, international harmonisation. Concede it. Then ask how much
of a forty-year delay it actually explains.
Part three · Manufactured anxiety SLOP8364 · WK 7
Anxiety, systematically produced# Safety anxiety converts directly into turnover .
Documented Quantified Traceable
This is where the course stops being interpretive and starts being measurable.
~4 min (1:12)
The register line again, now with something behind it.
Unlike “the fridge door is a stage” — true, illuminating, and not really
falsifiable — every link in this week’s chain leaves evidence. Surveys
measure whether people distinguish the labels. Waste studies attribute
tonnage to date-label discards. Retailer policies are published. The legal
text is public. Trial results from retailers who removed best-before dates
from fresh produce are reported.
If you cite a figure, check it the week you present it — the UK’s WRAP
work is the usual source, retailers have been dropping best-before dates from
produce since the early 2020s, and both the numbers and the policies move.
A stale statistic in a lecture about stale dates is a bad look, and some
student will find the current one during the break.
The point stands without any specific number: this is a claim that could be
checked, and week 8 checks the biggest part of it.
Part three · Manufactured anxiety SLOP8364 · WK 7
How anxiety becomes turnover# 01 Two labels, indistinguishable in presentation
02 The household cannot tell which is which
03 Under uncertainty about safety, the rational move is to discard
04 Discarded food is repurchased
05 Repurchase is revenue
No step requires anybody to act in bad faith.
~5 min (1:16)
Walk the chain slowly and let them check each link.
Step 3 is the one to dwell on, because it is where the household behaves
completely rationally and still loses. Under genuine uncertainty, the
asymmetry is brutal: eating something bad might make you seriously ill;
throwing out something good costs a few dollars. Any sensible person discards.
So the waste is not produced by carelessness, ignorance or moral failure. It
is produced by rational caution under manufactured uncertainty . Remove
the uncertainty and the same person behaves differently — which is exactly
what the honest-label exercise on Wednesday is testing.
This is also the course’s standing answer to the student who wants to blame
consumers, and it is worth saying in those words: if a system reliably
produces the same outcome across millions of households, the outcome is a
property of the system.
Part three · Manufactured anxiety SLOP8364 · WK 7
Who absorbs the cost# The household Food bought and not eaten, plus the unpaid labour of managing it.
The environment Production, transport and refrigeration — overwhelmingly upstream — plus methane from landfill.
The manufacturer The retailer
~4 min (1:21)
Externality, in one slide. Use the word and then define it plainly: a cost
generated by a transaction and paid by someone who was not party to it.
The household’s cost is doubly invisible. The money is invisible because it
was spent weeks earlier on food that was eaten in intention only. The labour
is invisible because managing the box — checking, rotating, deciding,
discarding — is unpaid domestic work that nobody counts, and it lands
unevenly along exactly the lines week 2 described.
The environmental cost is worth stating precisely, because students routinely
get it wrong: the emissions are overwhelmingly upstream , not in the bin.
Growing, transporting and refrigerating food that is then discarded means the
entire footprint was incurred for no nutrition at all. Landfill methane is
real and it is the smaller half.
Ask: on whose balance sheet does any of this appear? Nobody’s. That is what
makes it durable.
Part three · The reading
Stuart on retail standards Waste is designed in upstream , long before a household sees the food.
Cosmetic specifications Minimum-life-on-receipt terms Order forecasts that punish under-supply and forgive over-supply
The date label is the last of these mechanisms, not the only one.
~4 min (1:25)
Tristram Stuart, Waste: Uncovering the Global Food Scandal
Stuart’s contribution is scale and location. Before a single household is
involved, food is rejected for being the wrong shape, the wrong size, or
arriving with insufficient remaining shelf life against a contractual term.
Growers over-plant because under-supplying a supermarket contract is
penalised far more heavily than over-supplying it, and the surplus is
ploughed in.
Why this matters for the week’s argument: it stops the date label being a
freak. It is one instrument in a system that consistently converts caution
into discard at every stage, and the household is simply the last stage —
the one with the least power and the only one that gets moralised at.
The book is older than the students; the mechanisms are not. Say so, and note
that some retail cosmetic standards have loosened since, which is a real
change and worth them checking.
Part four What the date does not know# Part four · What the date does not know SLOP8364 · WK 7
What the date does not know# How cold your fridge actually runs Whether the packet has been opened How long it sat in a hot car What your nose is telling you right now
Your senses have information the printer never had.
~4 min (1:30)
This is the epistemics of the thing, and it is a genuinely strong argument.
The date was set on a batch, under controlled conditions, with assumed
handling. Everything that happened to this item afterwards is unknown to
it — and every one of those unknowns has more effect on the actual state of
the food than the printed date does.
Fridge temperature is the killer detail and the one to press. Ask: who
knows what temperature their fridge runs at? Almost nobody. Ask who has a
thermometer in it. One person, maybe. Domestic fridges routinely run several
degrees warmer than the dial claims, and the variation between the door and
the back of the bottom shelf can be larger still.
So the household is applying a number derived under controlled conditions to
an item held in conditions nobody has measured — and treating the number as
the reliable half of that pair. It is exactly backwards.
Do not let this slide undo the salad. Restate: senses beat the date on
quality; senses cannot see Listeria. Different question, different tool.
Part four · The method SLOP8364 · WK 7
The three questions# For any date, on any package:
1 Who wrote this number?
Rarely a food scientist 2 What were they protecting?
Rarely my health 3 What happens to me if I ignore it?
Rarely illness Question 2 does the analytical work, and it is the one that gets skipped.
~5 min (1:35)
The portable method. Tell them to photograph it — it is the slide that shows
up in their essays and in the tutorial.
Run it live on the four items from the opening so they see it work:
yoghurt — a manufacturer; brand perception; it tastes tangier.salad — a manufacturer, but constrained by genuine microbiology; my
health, actually; illness, actually. The method is honest enough to
identify the case where deference is correct, which is what makes it a
method rather than a stance.pasta — a packaging format; a formatting convention; nothing.cheese — a manufacturer; brand perception; you have to cut a bit off. Note aloud that question 2 is the one that does the analytical work and the
one students skip. “Who wrote it” is easy. “What were they protecting” is
where the week’s whole argument gets applied to a specific object.
Then extend: this is the same shape as the four-question method from week 1.
Same course, tighter instrument.
Part five The competence that was lost# Part five · The competence that was lost SLOP8364 · WK 7
Week 1
Households once knew how to judge whether food was good.
Week 7
That judgement is outsourced to a number printed by someone with different incentives.
The date label is where the forgetting became infrastructure .
~5 min (1:41)
Close the arc back to week 1. Most of the room will feel it land.
Simone’s week 1 argument: preservation required knowledge, judgement and a
calendar, and those capacities were not destroyed so much as no longer
transmitted. This week names the mechanism that completed the handover.
The word infrastructure is deliberate, so unpack it. A forgetting becomes
infrastructure when the replacement is printed on every package, in every
shop, in every jurisdiction, and is assumed by the regulations, the retail
contracts and the household’s own habits. At that point the old competence is
not merely unused — it has nowhere left to operate. There is no situation in
an ordinary week where a person is required to judge food unaided, so there
is no situation in which the skill could be rebuilt.
The uncomfortable question, and it is the honest one to end the analysis on:
was this a bad trade? Genuinely uncertain. Sensory judgement is not free and
not evenly distributed, and delegating it to a standard has real benefits for
people without the skill or the time. The complaint is not that judgement was
delegated. It is that it was delegated to a party with an opposing interest,
and that nobody was told.
The household did not stop being able to judge food.
It stopped being allowed to be the one who judges.
~2 min (1:46)
Read it and move. This is the sentence I would most like to see quoted back
in a Critical Essay, and about three people a year do.
Part five · A constructive turn SLOP8364 · WK 7
What an honest label would say# Not a date. A statement of what is known :
What this food actually is, microbiologically What would make it unsafe, and whether you could tell What will change first, and how you would notice What the manufacturer does not know about your copy of it
~4 min (1:48)
Constructive turn, and the direct set-up for Wednesday.
Work one aloud, slowly, so they have a model. The yoghurt:
Cultured dairy. Acidic and hostile to pathogens; safety risk is low and
stays low. It will get tangier and eventually sharp — that is the change you
will notice, and it is a taste judgement, not a safety one. Discard if the
liquid smells yeasty or the surface has coloured mould. We do not know how
cold your fridge runs or when you opened it. Tasted at our factory on 12
February.
Longer than a date. Also: everything a person actually needs, and it tells
them where their own judgement is the right instrument.
Then note what it gives up — the manufacturer has surrendered the pretence of
a single authoritative number, and has said out loud that some of the
judgement belongs to the customer. That is a transfer of authority, and
authority is not usually given away. Which is the next slide.
An honest label has to say what it knows,
what it does not know,
and what you should actually check.
~2 min (1:52)
The tutorial brief, in three clauses. Wednesday’s groups are held to exactly
this.
The hardest of the three is the middle one. Stating what you do not know is
the clause the lawyer objects to, and that objection is the subject of the
next slide.
Part five · A constructive turn SLOP8364 · WK 7
Which honest labels would a lawyer refuse?# A label that admits uncertainty invites a claim.
A label that transfers judgement to the customer transfers risk — in the direction nobody upstream wants it to go.
The label is optimised for the risk of the party who prints it, not for the decision of the party who reads it.
~4 min (1:54)
The sharpest question in the tutorial, so seed it now — Wednesday’s last
twenty minutes are spent on it.
The pattern that emerges every year: the honest labels students write are
clearer, more useful, and completely unshippable. Not because they are
wrong — because they are admissions . “We do not know how cold your fridge
runs” is true, helpful, and in a courtroom it is a document in which the
manufacturer concedes it released a product whose safe handling it could not
verify.
So the reason we do not have honest labels is not that nobody has thought of
them. Students write good ones in thirty minutes. It is that the honest label
is a liability instrument pointed at its own author.
That is the whole week: the label is optimised for the risk of the party
who prints it, not for the decision of the party who reads it. Say it in
those words. It is the most compressed version of the argument I have.
Wednesday · Session 07 SLOP8364 · WK 7
Wednesday: label forensics# Bring 5–10 items with date labels, or clear photographs. Prioritise the
confusing ones.
Sort the pooled items into:
A safety baseline
A peak of flavour
A date that should never have been printed
Then look up what the regulations actually require, and draft honest labels for three of them.
~5 min (1:58)
Logistics, and say all of it — the tutorial genuinely cannot run without the
items.
5–10 items or photographs. Not the clearest labels — the worst ones.
Anything with more than one date, anything implausible, anything where they
cannot tell which kind of date it is.Include the small print. It is usually where the meaning actually is,
and photographs that crop it are useless to their group.Read the Stuart excerpts on date labelling and retail standards.Do the Label Decoder on the session page before the reading, not
after. Unrehearsed assumptions are the data; a room that has already read
the answers produces nothing.
The finding that lands every year: the gap between what the regulations
require and what the packet says is much larger than anybody expected walking
in. Do not tell them the size of it. Let them find it.
Groups of four. Pooled items. The regulations are the reference and the
labels are the evidence — that is why it is called forensics.
Assessment SLOP8364 · WK 7
Two notes on assessment# Critical Essay Opens now, and Module 3 is its territory. Date labelling is the most popular phenomenon — and therefore the hardest to say something new about.
Final Project Keep your honest labels. Several have become Counter-Fridge proposals.
~3 min (2:03)
Say the warning plainly, because it saves marks every year.
Date labelling is the topic half the cohort reaches for, and half of those
essays restate this lecture back to me with the reading attached. That is a
pass, not a good mark. If they choose it, they need a specific object, their
own evidence, and preferably a case where this week’s argument does not fit
cleanly.
The strongest essays I have marked on this topic have all done one of three
things: found a product category where conservative dating is genuinely
justified and worked out what distinguishes it; taken a retailer that removed
best-before dates and looked at what actually happened; or attacked the
turnover mechanism directly and argued the incentive story is overstated.
That last one is welcome. It is meant to be attackable.
And the Final Project line is not decoration — honest labels drafted on
Wednesday have become Counter-Fridge proposals more often than anything else
in the course.
Next week · Week 8 The illusion of preservation# Bauman, and why the fortress fills the bin. Where the course’s central thesis
becomes a number — and where it could fail.
~2 min (2:06)
Close on the inheritance so the arc is visible.
This week: the date label is the trigger — the specific mechanism that
converts a household’s caution into a discard.
Next week: the system the trigger sits in. Bauman on liquid modernity,
and the fact this whole course exists to explain — households with reliable
refrigeration waste more food, not less. Not a paradox, not a measurement
artefact.
Tell them what week 8 is for: it is where the course’s central thesis becomes
a number, and where it could fail. That is the one to turn up to.
Finish on time. Stay at the front — the queue after this lecture is people
holding photographs of jars on their phones, and those are the best
conversations of the semester.