system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are fingerprints so unique that each persons is different?
gpt
First of all that's not a scientifically established fact, just a working assumption based on a relatively large sample.

Now, for your question. It basically comes down to the fact that the amount of possible configurations is many orders of magnitude larger than the amount of living humans, coupled with the high variability of fingerprints.