Hm. That would make sense, though it would make it no less frustrating for me. Perhaps it would make it better to use a style similar to the "Minute Physics" videos, where not every spoken word is shown.
Or present each sentence as a whole when the speaker starts saying it. (Reading is more "chunky" than listening; a single fixation of the eyes may take in multiple words. Or conceivably only part of a really long word. So presenting exactly one word at a time is rather weird.)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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