[mytec]

Couldn't help but think of the book Flatland and the parts about two-dimensions.

https://en.wikipedia.org/wiki/Flatland

[chazu]

The Planiverse by A. K. Dewdney is also a great read on this subject - its less of an allegory than Flatland and focuses more on what the physiology and society of 2D life might look like. Worth a look.

[Isamu]

I had this book, it had fun illustrations and thoughts about a hypothetical world.

https://en.wikipedia.org/wiki/The_Planiverse

[will_brown]

And of course Schlegel diagrams which are commonly used for visualizing four-dimensional polytopes.

It’s been over 100 years (very close in time to the publication of flatland) and I don’t think anyone has proposed an alternative diagram of a 4 cube/hypercube/Tesseract.

[Upvoter33]

Same here - especially the part about how a 2d creature poops...