Whilst these simple shorts would likely have been an interesting watch for the time, in the 21st century, they are four of the most boring things you could choose to watch. It's essentially some shapes moving about. A proof-of-concept that would have been mind-numbing enough to watch in 1940, let alone the 2020s, it'll at least help the next anime you watch seem that little bit more impressive. Attack on Titan...Death Note...Legend of the Galactic Heroes...surely you've got better anime to spend your time on than some black and white shapes moving across grainy film? At the very least, by focusing on shapes, this anime avoidedthe racial stereotypes that permeated early anime.