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Before mirrors were invented, almost no one had ever seen their own asshole
(startrek.website)
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
If you made it this far, showerthoughts is accepting new mods. This community is generally tame so its not a lot of work, but having a few more mods would help reports get addressed a little sooner.
Whats it like to be a mod? Reports just show up as messages in your Lemmy inbox, and if a different mod has already addressed the report the message goes away and you never worry about it.
Remember that the first mirrors were made from metal and polished volcanic glass.
Which means mirrors or mirror substitutes were always available to us even before we made metal tools as long as we could source obsidian. Granted you'd have to actually live near an active volcano for the latter.
However you aren't wrong! A cheap way to make "mirrors" in the old time is to just take a flat bowl with mud lining the bottom and have water on top. This was used when volcanic rock of polished stone/metal was not readily available!