system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do multiple layers of skin retain the same fingerprint?

I can have my outer layer of skin peel and retain the same fingerprint below it, what keeps it so consistent?
gpt
Imagine a printer creating copies of a sheet of paper. All of the copies that come out look more or less the same, since they were all created by the machine copying the same object.

Now, imagine your DNA is that printer. It's not copying your fingerprint, it has instructions to create that *specific* fingerprint over and over.