system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are industrial power generators 3-phased? Why not 1 or 2 phases, what's so special about it?
gpt
It's like riding a bike.  Two-phase power is equivalent to a two-pedal bicycle, and there are moments&mdash;when one pedal is all the way up and the other is all the way down&mdash;when pedalling is really hard and inefficient.  If you had three-pedals (and three legs :-) this problem would go away.