Talk:General Grievous vs Roronoa Zoro/@comment-31319716-20170114035443/@comment-3463132-20170116210831

Well the thing about heat is that it changes the density of objects. More heat makes molecules spread apart- which makes them less dense. Dense objects are harder to cut than less-dense objects.

However, the durability of fictional characters is not bound in how dense their flesh is and is supernatural. Meaning without proper showings, heat works against them perfectly fine for lack of evidence otherwise. This applies for anyone who is durable via physics-defying magic like auras, magical shields, ki, or anything else.

So while you're not wrong, neither am I. Durability through density would indeed mean more heat is required to make it less dense or to "cut" it. However, fictional durability borderline never uses density as the reason.

It's amusing in a way. Magic and science and their relationships when they interact in fiction is interesting to look at.