Do you memorize and rehearse the fully written-out talks?

For the most part you don't come off as having scripted the whole talk, but there are tells in your transcripts that they were written first.

I rehearse the talks but don't memorize them, if that makes any sense. The process of rewriting them ad nauseam helps me remember what to say.

I think of it as crossing a stream, and there are certain rocks that I have to make sure I step on. But getting between them is somewhat improvisational.