>without the presence of obvious
What the shit does this even mean? I need some help here trying to comprehend this. It doesn't make sense to me a slight layer of oxide on metal makes it a super material that can't be melted by steel beams, but flake off a little piece of it and SPARKS FIRE, or even how things oxidize quickly enough to kaboom. Is it like a conversion of energy spontaneously happening? WTF is this shit?