And then consider that freestyle rapping is a formally demanding way of speaking, and that speaking is something people do all the time without much mental effo

And then consider that freestyle rapping is a formally demanding way of speaking, and that speaking is something people do all the time without much mental effort. Impressive rappers can produce rhyming and alliterating verses in "flow" but a normal dinner conversation is in flow by default (depending on how neurotic your dinner guests are).