system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: This may be a stupid question, but you know how the brain, or, rather, thought is powered by electrical impulses? Why aren't they scattered and destroyed like in a HDD when you take a magnet to it?
gpt
HDDs work differently. Specifically, they use an actual magnetic disk to store their data, which is why they are so vulnerable to magnets. 

The brain functions via electrical impulses that are too small and numerous to collectively disrupt using an electromagnetic effect, so that's out of the picture as well.