system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are hover boards so impossible to make?

Like i dont mean the hover boards that you ride on the street and water, but why not make a park specificly for that use? A skate park made of positive magnetic pads and boards with positive pads too. That should make the boards float right? What are the limitations and why is it so impossible to make something like that?
gpt
First, you'd need millions of extremely powerful magnets to lift another magnet and a PERSON.  We're talking rip lights out of the ceiling and screw up every computer in the zip code strong.

Second, if you got all those magnets, the boards would all just flip over as soon as they became tilted at all and get pulled to the floor hard enough to turn human tissue and bone into pink slurry.

Assuming you got the magnets on a perfectly level plane with no slant (and no skatboard park-esque fun bits) and had a person with superhuman balance abilities stand on the board, yes, it would work after ripping their braces off of their teeth and out through the soles of their shoes.