this post was submitted on 14 Nov 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:

Rules

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. No politics
    • If your topic is in a grey area, please phrase it to emphasize the fascinating aspects, not the dramatic aspects. You can do this by avoiding overly politicized terms such as "capitalism" and "communism". If you must make comparisons, you can say something is different without saying something is better/worse.
    • A good place for politics is c/politicaldiscussion
  4. Posts must be original/unique
  5. Adhere to Lemmy's Code of Conduct and the TOS

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.

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[–] kbal@fedia.io 12 points 1 week ago (1 children)

Distance from eye to reflective surface unspecified. Capacity to blink twice in the time taken for light to traverse that distance in the relevant frame of reference is unknown.

The moon is about 1.25 light seconds away from Earth. There are retroreflectors placed on the surface of the moon by NASA, some of which are still functioning.

Given the number of people that stare up at the moon, it seems likely that someone has blinked twice with correct timing to be at the same time as their reflection.

On the other hand, I have blinked with my face only a few cm away from a mirror, so my reflection blinked 0.00000000007 seconds after me, so maybe "at the same time" is doing the heavy lifting here in the sense that there is some minimal period of time between most events we would consider simultaneous.

[–] BlueEther@no.lastname.nz 9 points 1 week ago* (last edited 1 week ago) (1 children)

To the light that is traveling from yuy, to the mirror and back - you did blink in the same instant. ie to the photon not time passes between bouncing off you eyelid and then being received by your retna

[–] Lumidaub@feddit.org 7 points 1 week ago (1 children)

Why would I care what a stupid photon thinks? What has electromagnetism ever done for me? Nobody even knows what an electromagnet is!

[–] burgermeister@sh.itjust.works 3 points 1 week ago (1 children)
[–] bryndos@fedia.io 2 points 1 week ago

i'd rather have a ton of pho.

[–] sem@piefed.blahaj.zone 3 points 1 week ago

Ffffffuuuuuuuu-

Unless you are the photon, then everything might be happening at the same time.

Phew!

[–] certified_expert@lemmy.world 1 points 1 week ago