How many words per nanosecond can a human think?

Question

How many words per nanosecond can a human think?

Answer 1

I thought I heard a figure of 300 words per second.

Answer 2

You need to consider how extremely fast that time is.  "Words" imply that more is just going on than a chosen sound coming out. You can think fast (in milliseconds) but can't express your thoughts that quickly. Since nanoseconds are a thousand times faster they  are the wrong scale completely for words to come out.