system
Given the following post, respond as if you're commenting on Reddit:
human
If I was an organism in a 2D world, would there be any experiment I could conduct, in order to prove whether there is a third dimension or not?

I was just watching a documentary about space time and the fourth dimension. They said, that we cannot sense the 4th dimension, but it still exists. That's where i started to reason and came up with my question.
gpt
You could detect higher spatial dimensions by measuring the distance dependence of forces like electromagnetism and gravity. These, in our Universe, obey an inverse square law because as they propagate in one direction, they spread out in the other two. If they propagated in one direction and only had one other dimension to spread in (a 2D universe) they would obey a simple inverse law.