3 reasons to watch this talk by Lera  Boroditsky:

1) Uses audience interaction effectively, inviting us to participate imaginatively, physically, and intellectually – without us needing to move from our seats, or speak out loud.

2) Makes good use of conversational rhythms and pauses. Combined with the audience interactions, lots of use of rhetorical questions, and well-judged time for audience responses – we feel included, and not ‘talked at’.

3) Purposeful use of slides – to add humour, engage us visually, and clarify what she is saying.