Normally I work out a general summary of what I mean to do, then start writing, and the details can be different from my anticipation. So there is considerable flow, but always within channels.
Piers AnthonyPolishing: a useful lesson for the hopeful writer. You say your tormented prose doesn't read as well as mine? Neither does mine, at first!
Piers AnthonyBink knew the dolphin only from old pictures; it was a kind of magic fish that breathed air instead of water.
Piers Anthony