The Feynman anecdote was pretty cool. Feynman counted 'verbally' in his mind, so he was able to keep a steady and consistent count while reading and writing, bu

The Feynman anecdote was pretty cool. Feynman counted 'verbally' in his mind, so he was able to keep a steady and consistent count while reading and writing, but not while speaking or listening. His friend kept count by visualizing the numbers in sequence (like a clock, kind of) so he could keep steady and accurate count while holding conversations but not at all while reading.