Humans can’t karate chop each other’s entrails out.
Viltrumites are weirdly vulnerable to pointy things to a far greater degree than you’d expect from something of their durability. Anything of their durability, really.
This isn’t “human poked by other human with needle”, more “human’s skin is cut by the pressure of an ant walking on it”. If it was just a pressure thing then Nolan could’ve used his Lucan disembowelling strength to just give him skull fractures with every punch. Fingers aren’t knives or needles, and if you want to cut inches deep into flesh with them then you need a far higher amount of force than the owner of that flesh could generate with their own body.
Everything else I pretty much agree with, but the specific extent that Viltrumites are easily killed with pointy object vs brick is definitely not at all comparable to humans because poking actual literal holes in one another’s torso with our fingers isn’t a thing we can do in combat ever.
Sharp things just move nearby atoms in different directions, so it’s an issue of intermolecular bond strength rather than say, compressive strength or thermal conductivity.
Do you mean tensile or shear strength?
What do you think this upper limit is exactly?
There’s an upper limit to how resistant bone can be to forceful things too but Viltrumites just ignore that by a factor of several million times. If their skin wasn’t already stronger than is possible for skin to be then they’d be blasting holes in each other by throwing punches anyway.
No I’m asking about when you said intermolecular bond strength, because the only reason that should be relevant is if you’re trying to break apart the molecules that make their body up and turn chunks of them into elemental matter.
Ice has a higher intermolecular bond strength than iron but is still much easier to shoot holes in or cut open.