I mentioned to Doctorow that I particularly enjoyed this fanciful invention on his part.
Doctorow famously said that writing a novel is like driving at night—you can see about as far as your headlights shine.
Doctorow, who met him around this time, remembers him having the intellect of an adult.
Indeed, Doctorow has long been doing just this for a long time.
For Doctorow, the brain could stand for free creation and the mind represent forms and genres.