this post was submitted on 09 Apr 2026
108 points (91.5% liked)

Showerthoughts

41555 readers
1036 users here now

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.

founded 2 years ago
MODERATORS
top 30 comments
sorted by: hot top controversial new old
[–] captainlezbian@lemmy.world 3 points 5 hours ago (1 children)

A lot of things are older than furniture. Furniture dates to the pleistocene at the earliest.

[–] corsicanguppy@lemmy.ca 3 points 5 hours ago

Better yet: sharks existed before our notion of FIRE.

[–] AnarchoEngineer@lemmy.dbzer0.com 30 points 18 hours ago (1 children)

Sharks have been around since before Polaris (yes the North star) was born which, personally, I think is cooler than being older than trees

[–] Petter1@discuss.tchncs.de 10 points 17 hours ago (2 children)

Was born, or it’s light reached earth?

[–] corsicanguppy@lemmy.ca 3 points 5 hours ago (1 children)

it’s light

Aye, it is light.

[–] egrets@lemmy.world 1 points 1 hour ago

At around 1.7 million times the weight of the Earth, it's not all that light.

[–] AnarchoEngineer@lemmy.dbzer0.com 20 points 17 hours ago

It’s only ~466ly away, so both

[–] DoubleDongle@lemmy.world 37 points 19 hours ago (1 children)

There is nothing about being ancient beyond all proper comprehension that makes something less scary

[–] errer@lemmy.world 5 points 15 hours ago

Yeah well I couldn’t beat a shark to death with a chair before trees existed, that’s my primary means of shark defense!

[–] tensorpudding@lemmy.world 19 points 18 hours ago* (last edited 9 hours ago) (1 children)

Another fun tree fact I heard, the reason why coal exists was because trees existed on land for a long time before decomposers existed to digest their fibers. They just died and were buried intact. This actually caused a problem with sequestering so much CO2 that the earth went into an ice age.

Edit for clarification: decomposers did exist but they couldn't decompose tree lignin specifically so it just stayed around.

[–] ElectricWaterfall@lemmy.zip 4 points 12 hours ago (1 children)

Too bad we don’t have that problem now.

[–] captainlezbian@lemmy.world 2 points 5 hours ago (1 children)

You can still make coal, it just involves bogs hostile to decomposers these days

[–] ElectricWaterfall@lemmy.zip 2 points 4 hours ago

I guess I meant the locking away co2 and ice age part.

[–] TvanBuuren@lemmy.world 10 points 16 hours ago (1 children)

They existed before fire (before the oxygen levels sustained fire on the surface)

[–] SkyeLight@piefed.social 15 points 19 hours ago (1 children)

Sharks have existed long enough that their species (and our Sun) has circled around the entire Milky Way Galaxy - twice.

[–] Ragallos@lemmy.dbzer0.com 1 points 4 hours ago

I've heard all these shark existence analogies, but this was a new one and blew my mind again. Sharks are so OLD.

[–] JohnnyEnzyme@piefed.social 10 points 19 hours ago* (last edited 19 hours ago) (1 children)

That's a good one. Although at the same time, we almost certainly discovered trees well before sharks.

And for no particular reason, a fun fact from an earlier thread-- eggs came over 500million years before chickens did!

[–] wltr@discuss.tchncs.de 8 points 18 hours ago (1 children)

So, the chicken and egg problem is solved then! Isn’t it?

[–] JohnnyEnzyme@piefed.social 8 points 18 hours ago

Something I learned just now is that the problem / paradox evidently goes back to Ancient Greece! [WP]

But yeah, I think we could consider it solved (among rational people) with the development of the Theory of Evolution, combined with a better understanding of zoology and various other fields. So, maybe by 1900? And I suspect that the ancient-ness of the problem is a big reason people still use the expression, even though it's been shown to be a faulty question for over 125yrs.

Btw, internal eggs to my understanding are as old as sexual reproduction, over 600M years ago. External, shelled eggs go back over 300M years ago. Galliformes (chickens and relatives) go back about 85Myrs.

[–] classic@fedia.io 4 points 17 hours ago (1 children)

TIL that this thing about trees pre-existing decomposers doesn't mean that there weren't things before trees. Like, I thought we had a planet of trees and plants and nothing else, no fish, insects or whatever.

[–] moonburster@lemmy.world 5 points 16 hours ago

Otherlands by thomas halliday takes you along the story of our past biomass. Very cool read

[–] Mr_Fish@lemmy.world 6 points 19 hours ago (1 children)

What about people afraid of jellyfish? They're older than bones

[–] arctanthrope@lemmy.world 7 points 18 hours ago

how bout germophobes; bacteria and other microbes had already been around for 2.5 billion years before any multicellular life evolved. for over 70% of the history of life, they were the only thing that existed

[–] baitu@jlai.lu 4 points 19 hours ago

I'm even more scared now

[–] minorkeys@lemmy.world 3 points 18 hours ago

Meanwhile the tardigrade, "Who brought the sharks?'

[–] Tattorack@lemmy.world 0 points 15 hours ago (1 children)

I always find this very funny. It's as if the sharks today are venerable million year old entities. As if the species sharks today have anything in common with the shark species 100 million years ago.

The horseshoe crab fits much better in this sentiment, as they haven't physically changed at all this whole time.

[–] Thorry@feddit.org 9 points 15 hours ago (1 children)

The current species of sharks evolved around 200 million years ago, so yeah the species of sharks today have everything in common with the species of sharks 100 million years ago. Sharks are famously also remarkably stable in their evolution. They do evolve and branch out with specializations, but physically the basic shark form has been the same for a very long time. The sharks that were around 400 million years ago when trees first evolved would have been very similar to the sharks we have today.

[–] Tattorack@lemmy.world 2 points 13 hours ago (1 children)

Not so sure about that, considering one of the shark fossils discovered had teeth like tombstones, and another had a weird sawblade for a lower jaw.

[–] fakeman_pretendname@feddit.uk 8 points 12 hours ago

Those were just rare special edition sharks. The rest of the sharks were just normal ones.