> Can't you type faster than you speak? Doesn't your speaking inhibit your thinking?

For me personally: no, I speak faster than I type; and speaking actually helps me get more ideas compared to typing.

(Not sure if that’s due to having no typing speed barrier, or maybe because speaking activates different parts of the brain.)

Once you get over the feeling of self-consciousness, it’s a great way. I even go on short walks sometimes and mumble to my phone to prepare some long prompt. Thinking works even better, when walking outside :-)