system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What attracts flies to people? I have to wave them away 100 times and they still want to come land on me, why won't they find something else to land on? How do they not eventually get annoyed and move on?
gpt
They're attracted by the moisture and salt on your skin. The reason they keep coming is because flies arent aware you exist. You like a million times bigger than they are. The reason they keep hitting into you even after you swat at them is they have very poor memory. You ever seen a fly come inside through an open window, and then spend an hour trying to get back out by slamming itself against every part of the window except the open part?

It's like that.