Pretty sharp character

DON'T WRITE DOWN TO YOUR READERS!
It is common knowledge that a large portion of comic magazine readers are adults, and the rest of the readers who may be kids are pretty sharp characters. They are used to seeing movies and listening to radio shows...

Wise advice from the 24-year-old legend-to-be Stan Lee, Writer's Digest, November 1947. Reproduced in Herbert Marshall McLuhan's The Mechanical Bride (1951).