system
Given the following post, respond as if you're commenting on Reddit:
human
Why are moths attracted to light?

What evolutionary reasons are there be for moths to be attracted to light?
gpt
They're not attracted to light.

They use the moon/sun as a navigational aid. When you're flying in a straight line, the position of the moon changes little. When flying by a light bulb, they are simply trying to change course to keep it the same place relative to themselves, which results in running into the light source.