this post was submitted on 04 Sep 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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1D and 2D are just mathematical abstractions. Everything is just 3D and that's it. There is no time, just space with a state.

(I tried to explain better in comments so please check that. I would be glad if someone could give me a response to this brain fuck I’m having)

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[–] squaresinger@lemmy.world 4 points 1 week ago* (last edited 1 week ago)

Dimensions are primarily about coordinate systems. They are about the question of "Where is something?".

1D and 2D exist and are used all the time. If you are moving your pawn to e3 in chess, you are using a 2D coordinate system.

If you have an accident and you call emegency systems and tell them that you are at highway kilometre 134.5, then you are using a 1D coordinate system.

Higher dimensionality coordinate systems exist too. For example, if you watch a live-rendered 3D animation (laso not something that's pre-rendered into a flat video), then it's a 4D video. Objects in the video have fourdimensional coordinates: a 3D position and a timestamp. In statistics you often have much higher dimensional data as well.

The idea that there would be an n-th dimension as a physical space is nonsense and it's also not what dimensions are about at all. That's what happens if fiction authors hear fancy terms without understanding what they are about.

Edit: in fact, three dimensions are only enough to describe the position of a thing in real life, but things also have rotation. That's another 3 dimensions. And since e.g. humans can rotate a ton of things, each of these things is another dimension for each rotational axis.