Cephus
Relentlessly Rational
There is no "supernatural" or "paranormal". If it exists then there is a science behind it. That's like suggesting that electricity didn't exist, or was a supernatural/paranormal phenomenon, until we gained an understanding and knowledge of it. The universe is vast and infinite, much of it outside of our current, limited (yet expanding) understanding and knowledge. Nothing is outside the realm of science, only outside of our current scientific knowledge. Sure, based on current evidence and scientific knowledge, it's reasonable to reject god concepts (especially those commonly put forth by the usual religions), but we can still play with concepts, models, hypotheses, etc.
Yes we can, right up until the religious start declaring that their gods are inherently beyond any ability for man to ever examine. Once that's the case, we can simply ignore the claim. However, theists still claim that there is something beyond our ability to ever see or test or experiment on. It's a ridiculous claim, not one supported by evidence, hence no rational person ought to believe it.
Many theists are not rational people.
So we know that while mithril doesn't actually exist, the model still works since weight, physics, physiology, etc. obviously have real world examples. Likewise, if we present a model of an entity that possesses infinite intelligence and logic, we can still determine that it wouldn't behave in an unintelligent or illogical manner even if such an entity doesn't actually exist due to intelligence and logic being a real world thing.
Because we examine it based on the 800 pounds, not the mithril. 800 pounds of anything is going to kill you. 800 pounds of feathers will kill you, or more likely just suffocate you, but you're still dead. Just because you provide an imaginary object, it's not about the object, it's about the weight. If you had said 800 gertizons of mithril, nobody would take it seriously.