He discovers that he can read while counting in his head at a steady rate, but he cannot talk while counting. When he tells his friends, one of them claims to be the opposite, and indeed proves that he can count while talking but not while reading. It turns out “he was visualizing a tape with numbers on it going by.”
That friend was John Tukey. You may have heard of him. He invented the Fast Fourier Transform.
http://calteches.library.caltech.edu/607/2/Feynman.pdf
He discovers that he can read while counting in his head at a steady rate, but he cannot talk while counting. When he tells his friends, one of them claims to be the opposite, and indeed proves that he can count while talking but not while reading. It turns out “he was visualizing a tape with numbers on it going by.”
That friend was John Tukey. You may have heard of him. He invented the Fast Fourier Transform.