Ill-digested principles are, if anything, worse than ill-digested food, for the latter harms the body and there is cure for it, whereas the former ruins the soul and there is no cure for it.
And although our bodies are bounded with skin, and we can differentiate between outside and inside, they cannot exist except in a certain kind of natural environment.
Half of Hollywood has more prosthetic in their body than I do, but we don't think of them as disabled. You amputate part of a nose, that's 'enhancement'. You put a prosthetic in a breast cavity, that's 'augmentation'. But you amputate part of a limb and put a prosthetic there, it's 'disability'?
But like infection is the petty thought: it creeps and hides, and wants to be nowhere--until the whole body is decayed and withered by the petty infection... Thus spoke Zarathustra.