system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Dementors feed on happiness, so their victims become miserable. Boggarts feed on fear; why don't their victims become brave?
gpt
Boggarts don't "feed on fear." They simply become whatever their target fears most. To what end is not known. It's not even know if they are intelligent creatures using their ability for some specific means or are more akin to a force of nature that just does what it does.