But do those people really have the ideas they claim to have, or do they only have vague, unformulated notions, whimsies of grandiose vision without supporting thought? Anyone can say "I'll write a book," but very few people can tell you the plot in any great detail, let alone the motifs or themes they'd try to work in. People just think they've given things more thought than they really have, or really ever will.

To put it another way, when I say "idea supply," I am only referring to the ideas hardy enough to survive the communication process.