system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why does a fly risk death seemingly just to bother me ?
gpt
Flies do not understand the concept of risk and aren't really aware of anything other than their immediate environment of a few feet around them. They don't even have any real thoughts, they just work based on very simple stimuli.

Maybe the fly is stuck in a "loop" because of the layout of the room you're in, and is looking for a way out (windows are a sure way of trapping a fly). Maybe he can "smell" something delicious on or around you and is looking to get a taste, but your movements prevent him from landing, but he's still hungry and doesn't have the presence of mind to stop trying.