system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we clap our hands as an act of cheering?
gpt
There's no real reason really. We could have chosen any gesture to represent cheering such as snapping fingers or stomping feet.

However, clapping makes a lot of noise, doesn't require another surface nearby, and takes barely any technique to be effective. Some people just started doing it, and it caught on because there wasn't a need for something different.