system
Given the following post, respond as if you're commenting on Reddit:
human
[The Walking Dead] How is Michonne keeping those katanas so damn sharp?

Cutting heads off is hell on a blade, even the best ones. And sharpening katana's is a pretty arduous process that takes a bit more than a whetstone. Considering how many heads she must have chopped off, how the hell are those blades not dull as cheap machetes by now?
gpt
Correction: Cutting off *human* heads is hell on a blade. Decomposition takes a lot of the structural integrity of a body away. Decapitating a walker is both less wearing on a blade, and doesn't require the blade to be sharpened as often or as well.