Essential shopping and the sorites problem

This week, as part of its "firebreak" lockdown, Wales announced that supermarkets will no longer be allowed to sell non-essential products, and it got me thinking about what "essential" products really are.

Below I'll argue that no products at all -- even food -- are essential if "essential" is to be understood as necessary for the preservation of life. Secondly, I'll suggest that even though many products are not truly necessary, it is reasonable for them to continue to be sold to us in 2020.

The firebreak

First, a bit of background. Wales, like the rest of the UK and indeed much of the world, is suffering rising numbers of deaths from covid-19. First Minister Mark Drakeford announced a couple of weeks ago that Wales would a so-called "firebreak" lockdown. More commonly referred to as a "circuit breaker" lockdown in England, a firebreak is a short (2-4 weeks) but thorough national lockdown aimed at cutting the spread of the virus in order to:

A) save lives

B) decrease the strain on health services 

C) prevent a longer or more extensive lockdown being needed further down the line (a sort of "stitch in time saves nine" approach)

These are noble goals. The idea is that making people stay at home and refrain from mixing with one another should stem the spread of the virus. Under normal (or even "the new normal") circumstances, people often leave the house to buy non-essential products, so if non-essential items are not on sale, then that's a lot fewer people out spreading their germs around. It makes sense to me. But what products are actually "essential"?

Food

To know what products are essential, we need to know what "essential" means. Does it mean essential to having a nice, fun, plentiful life? Or does it mean people would literally start dying without said product? Perhaps it means something in between.

Setting the bar really low

If we define "essential" as "essential to having a nice, fun, plentiful life", then just about every product seems essential. This includes consumer electronics, all clothing, furniture and soft furnishings, toys and games, DIY products, entertainment items, books and stationery, as well as food and drink. Basically any item which is on sale might appeal to someone as a product which can give them a slightly better life, so is essential, and therefore can be on sale during the firebreak lockdown. 

"I just picked up a few essentials." 
Image source: Unsplash

Setting the "essential" bar this low would mean that all retail outlets would remain open, selling everything they always did. I don't think that's what the First Minister had in mind. 

Setting the bar really high

Perhaps the most intuitive definition of "essential" is "people will die without it". Essential does, after all, mean necessary; required; needed. Essential can mean essential to life. But it seems to me that just about all foodstuffs are non-essential.

Will I die if I don't eat my favourite brand of sausage? Nope. Will I die if I don't eat any fruit? Nope. Will I die if I don't eat any X (where X is any individual food or drink item)? Nope. Anyone who has watched the TV show Freaky Eaters will know that people can survive on remarkably limited and seemingly unhealthy diets for years or even decades.

Food is essential, but no individual food is essential. This presents us with a philosophical conundrum. Does this mean the shops should sell all foods, or no food. No one can reasonably argue that supermarkets simply must sell (e.g.) shitake mushrooms, thyme, canned salmon, mint ice cream, and digestive biscuits. We can live without these things. People might see milk, bread, eggs, and fresh fruit and veg as essential, but they are not. We would not die without these products. (The only product which I can see is essential in its own right would be baby formula for unweaned babies who aren't breast fed.)

This presents us with a sort of sorites problem: 

• If the supermarkets all stopped selling one product, we could easily survive.
• If the supermarkets all stopped selling two products, we could easily survive.
• If the supermarkets all stopped selling n products, we could easily survive.
• ... 
• Conclusion: If the supermarkets all stopped selling all products, we could easily survive.

The conclusion is obviously false, as with all sorites problems. The nature of a sorites problem is that small incremental changes to the number of items on sale (or grains of sand in a heap, hairs on a man's head) do not make any discernible difference to the conclusion that there is enough food (a heap of sand, the man is bald), but a big change does make a difference. All food isn't essential, but some food is.

There is no magic number at which we can say that the supermarkets are selling the "essential" number of foodstuffs. Moreover, even if we did discover the magic number of essential foodstuffs (say, 36 foods), that still wouldn't tell us which foodstuffs are the essential ones. Even if it were the case that, say, bread is essential, that still would not mean we needed 80 varieties of bread on sale in the supermarket.

Image source: Unsplash

But something tells me that Mark Drakeford wasn't concerned about a sorites problem when he proposed that supermarkets are only sell essential foods. 

In reality, outside of the philosophy classroom, we don't much concern ourselves with sorites problems. [Although I wrote this post about my son presenting me with a sorites problem when I asked him to eat all his peas.] We just tend to pick a point for the sake of pragmatics, and go with it (recent examples include the Rule of Six, and the limit of 15 guests at weddings).

In actuality, Wales' First Minister has deemed that all food products are essential, assuming they are for consumption off site (because cafes, pubs, and restaurants are closed). It's not true to say that they are truly essential, but deeming all food essential certainly helps to avoid unhelpful criticisms about why this food is more essential than that.

Alcohol

Don't even get me started on why the UK government and Welsh Assembly believe that alcohol is a necessary foodstuff. Off licences were one of the few "essential" businesses permitted to stay open during the first UK lockdown back in March. I know Brits are known around the world for drinking 15 pints in one session on a Friday night (and the same again on Saturday night, and maybe a few cheeky pints on Sunday too, plus a few cans after work during the week), but for the government to maintain that alcohol is essential is absurd.

I love a good bottle of red wine, but seriously, nobody needs alcohol. We might like it, love it, or even feel we need it, but we don't. In fact, a firebreak from alcohol might do more for the health of the nation than a firebreak from covid! The sheer horror of having a fortnight of sobriety is clearly too much to handle. Food is essential: booze is not.

Other products 

Even if we accept that food is necessary, just about all other products in our lives are non-essential. Health-type products such as toothpaste, soap, sanitary towels, toilet paper, and laundry detergent might seem pretty important, but are they essential? Would we die without these products? Of course not! Plenty of people around the world manage without these things for their entire lives. It wouldn't be pleasant (for Brits) to have to survive without toilet paper, but bums can be cleaned with water and cloths, as they are elsewhere in the world. 

The Great Toilet Paper Shortage of March 2020
Image source: Unsplash

During the 'Great Toilet Paper Shortage' of March 2020, I refused to panic buy, and was consequently was forced to face up to the prospect that I might have to do without loo roll as my supplies dwindled and I searched for toilet paper in 6 shops across 3 days. I cut up some old tea towels and bed sheets in preparation and desperation. Thankfully, I managed to secure 4 rolls of toilet paper at the eleventh hour from a petrol station, so the cloths were never used for that purpose - but they could have been. My point is that toilet paper is not truly essential; we could have survived without it.

Sanitary towels, too, are not a matter of life and death. Women across the world are forced to live in conditions such that they must use whatever they can during their periods. Cloths, toilet paper, menstrual cups -- all of these are alternatives to sanitary towels and tampons. Few women would want to go without sanitary products, but we could do it if necessary. Edit: It seems that some supermarkets have told shoppers that they can't buy period products! It's hard to know what to make of that. I know I'm saying they're not essential to life and limb, but they're more essential than alcohol, cakes, and many other products which remain on sale in Wales.

Concluding remarks

Image source: Unsplash

Under Wales' rules, the only shops which can stay open are food shops, convenience stores, newsagents, corner shops, bicycle shops, petrol stations, DIY/hardware stores, and off licences. This is a bizarre choice of shops if you ask me. It would seem that the First Minister believes that essential products are food, alcohol, petrol, bikes, and DIY products. Welsh shops have stopped selling stationery, cleaning products, and winter clothing. So I can buy wallpaper but I cannot buy a pen; I can buy 24 cans of Special Brew, but I cannot buy a coat. I can buy bathroom tiles, but not some disinfectant. 

I realise that as with so many things during the pandemic (and probably the rest of the time too) the government are damned if they do, and damned if they don't. Could we survive without almost all products in the supermarket? Of course we could: shops are only a recent development in the history of mankind, and people around the world survive every day without tampons, bikes, alcohol and newspapers. But should we be expected to survive without these products in 2020? Probably not. It's quite reasonable for the Welsh people to demand that winter coats, tampons and disinfectant should be on sale even during the firebreak lockdown.

Edit: several of the news stories above seem to have prompted the supermarkets / the Welsh Assembly into conceding that period products, winter clothing, cleaning products and stationery should remain on sale in supermarkets during the firebreak.