There is lots of wriggly middle. Lots of storytelling happens in that wriggly middle, where some nominally mundane but really "cool" dude kills an army because fuck you that's why. That's difficult to replicate reliably or sensibly, because it's usually author fappery, but it's there and it's really, really old.John Magnum wrote:If your punches are hurting the ghost, either your punches aren't mundane or the ghost isn't incorporeal. There's really not some wriggly middle that you can find if you bury the supernatural elements behind an obscure enough part of speech.
Mostly I think we're on different pages. Are we talking about mundane power sources and mundane actions, or mundane capabilities? Because if it's mundane capabilities, there's nowhere to go and nothing to discuss. Your starting premise is that the mundane cannot affect the supernatural. But punching people is a mundane action and training really hard to punch people is a mundane power source, and if training really hard to punch people so that you become the Usain Bolt of punching people allows you to punch ghosts by virtue of your punchiness, that is simply how it works.
There is a legitimate distinction between things that feel and are called mundane (even varies setting by setting) and what actually happens in the real world. For example, people are not impressed by having a giant bag of hitpoints - people do not think hitpoints are magic or even supernatural. Hitpoints are considered a wholly mundane defense by most, even when the results they produce are ridiculous with respect to the capabilities of real world humans. If ghosts existed in the real world (hint: they don't), mundane people could not punch them by training real hard. But ghosts don't actually exist, and we're not talking about the real world, so I'm really not sure how any of that would be relevant.
Is wearing a fire-retardant suit mundane? If so, then does the fact that a man wearing such a suit can walk through a wall of fire and experience minimal harm mean someone without such a suit can walk through that same wall of fire with minimal harm? You're using lava specifically because it is such an extreme example from the real world that it is essentially binary. But I do want to remind you that the actual property you're referring to without trying to sound like you are referring to (resistance to things that are really hot) is variable for different mundane people employing different mundane tactics, so... thanks, yeah. That's another good one.Kaelik wrote:If there is lava that Usain Bolt can touch without being burned, then other people can also touch that lava without being burned, and therefore, that lava is missing some essential element of lavaness.