During Charlie's globe-trotting, interruptions to his supply of liquid helium cause difficulties in maintaining the optimum operating temperature (4K) of the superconducting neurons in his prodigious precuneus. (This is not rude.) So here I am, Not Charlie, humbly filling in.
Faithful readers know there are two FAQs that one really shouldn't ask. There's “I've an idea, will you write the book for me and we'll split the money?”, which generates a reflexive two-monosyllable reply in any writer's mind (modulated by varying degrees of politeness as subsequently uttered).
But “Where do you get your ideas from?” elicits a different reaction: a widening of the writer's eyes as they affect disdain, a shakiness in their laughter as they attempt to dismiss the words; for there are places where We Dare Not Look (lest Cthulu suck out our brains).