Serious question: how do people on LW experience thinking?

I find that the heavy lifting of my thinking is nonverbal and fast. Verbalizing (and often re-re-verbalizing) takes time, running explicit math takes (a lot of) time, and worrying at a verbalized idea without getting anywhere can waste indefinite time, but actual intelligent thought feels like a burst of focused attention/effort and a gestalt answer that arrives in an instant.