From the TED-Ed YouTube channel:
Imagine a two-dimensional world — you, your friends, everything is 2D. In his 1884 novella, Edwin Abbott invented this world and called it Flatland. Alex Rosenthal and George Zaidan take the premise of Flatland one dimension further, imploring us to consider how we would see dimensions different from our own and why the exploration just may be worth it.
Lesson by Alex Rosenthal and George Zaiden, animation by Cale Oglesby, music by David Housden.