system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is handwriting so distinct to an individual person?
gpt
I would say primarily because its a muscle memory action. You don't actively think about how to write each letter as you are writing them. You achieve muscle memory by repetition of the same action, so each person will tend to reinforce whatever particular traits they happen to have when writing. The traits themselves are going to come from all sorts of factors: grip, how you were taught, styles you might try to emulate, etc.