What you say versus what you think you say

Just put up the transcript of a talk at gave about maths education (similar to my TED talk) at our Technology conference a few weeks ago.

I find it informative to read because I remember saying stuff slightly differently from how I actually did.

I rarely write stuff out word for word for talks. Usually I make headings and fill in in real time. The killer is not having a full text but trying to remember word-for-word what to say...I'm a useless actor.