system
Given the following post, respond as if you're commenting on Reddit:
human
But seriously, how does the magic eraser work.?

Bought one and it removes sharpie like nobody's business. 

What's up with the science behind it? 

Is it just super abrasive?
gpt
It is made of a polymer (melamine) with a very slightly porous/abrasive surface.  It works by polishing the surface, basically removing a very small layer.  It works great on most surfaces but you definitely don't wanna try it on glass.