mostly one headcanon but hey if a convo starts...

fun fact about my sans: i play him as literally not being able to get a minor scrape without dying. his agility and minor ability in seeing the future helps with avoiding this, but that skill was developed

rather than him being born with it. i'm unsure if pap would be fully aware of how serious it is, but if frisk can check monsters' hp i can't see why monsters wouldn't be able to check each other.

either way, sans stubbornly refuses sympathy for it and gets extremely stressed when people bring it up at all. he'd much rather people just have the "why the fuck u lyin" reaction most genocide players have.