what means

Imagine if you were the only observer to ever exist, and you spent 100% of your life contemplating your navel. Then the probability of observing yourself to be human would be at least fairly high, unconditional on which observer is selected.

@singer what would it even mean to "observe yourself to be human" in that scenario

@marvingardens you would be a human and you would be observing your navel

@singer you're asking: "if you were a human observing your navel, what is the probability you'd be a human observing your navel"? I don't think so