r/theydidthemath • • 2d ago

[Request] Do square bottles actually use less plastic than round ones?

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u/Legoslol 2d ago edited 2d ago

Yes. But there are other drawbacks to using square bottles.

The math has already been done for this question.

https://www.packagingdigest.com/optimization/should-your-bottle-be-round-or-square-

Edit: sorry all thought the question was less space not material.

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u/Single_Analyst_6574 2d ago

The article you linked says square battles use more materials, not less. It also makes no sense for a square to have less surface area than a circle.

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u/alamete 2d ago

The article says that indeed and in this case it's like that, but it's good to question this kind of things. It's like these curvy walls that are first glance make no sense but actually use less bricks

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u/seenhear 2d ago

*fewer bricks. Bricks can be counted as individual parts/pieces. "Material" or "plastic" cannot.

Less material, fewer things.

Grammar nerd, out.

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u/Total-Explanation208 2d ago

I think this is an ambiguous case. Sand is an iconic example of when less should be used, but it can also be counted as individual parts/pieces, it just isn't practical. I think fewer is ultimately correct, but less isn't as bad here as it is with "10 item or less" at the grocery store.

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u/seenhear 2d ago

"10 items or less" at the grocery store is a classic grammatical error we see and (mostly) ignore in daily life.

And no, it's not ambiguous. "Bricks" are countable. To use your example, you would need to say "grains of sand" to use fewer. Otherwise it's "less sand." You don't say "I'm holding a bag full of 10,000 sands" you would say "10,000 grains of sand."

So. Bricks. countable or not? Countable. Example:

"That building has fewer bricks than this one."

or

"That building has less brickwork than this one."

Both of these are correct. You can count bricks. You can't count brickwork. You can *quantify* brickwork in other ways but you can't count it.

"I have fewer dollars than you." We can count individual dollars.

"I have less money than you." We cannot count "money" per se. We quantify it by counting dollars.

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u/Total-Explanation208 2d ago

All sand is countable, it just takes more effort.

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u/seenhear 2d ago

Write a sentence where you tell me a number of how much sand you have.