this post was submitted on 16 Jan 2025
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted, clever little truths, hidden in daily life.

Here are some examples to inspire your own showerthoughts: 1

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We tend to describe the pupil as though it's its own actual separate part of the eye. It's almost strange to think about the fact that in reality it's just a hole in the Iris and not a "thing" at all. (lemmy.ca)
submitted 3 days ago* (last edited 3 days ago) by Adderbox76@lemmy.ca to c/showerthoughts@lemmy.world
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For example, why do we say "Your pupils are dilated". They aren't. It's the iris aperture that is dilated.

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[–] BrazenSigilos@ttrpg.network 2 points 3 days ago* (last edited 2 days ago)

Well yes, but also no.

The term pupil is used to describe an area that exists inside a three dimensional space, the eye, and while that space may not have anything that reflects light, it does contain something. The surface of the eye, known as the lens, and the liquid or 'jelly' that is contained inside the eye. So that area that is light reflective material would include the whites and the iris, but the inside of the eye is not just empty space. If it was, your eye would collapse like an uninflated beach ball, and you wouldn't see very much at all. Arguably the term pupil is used to refer to the non-reflective area of the eye bordered by the iris and containing the lens.