On 8th May I gave a large public lecture about The Knowledge at the venerable Royal Institution. Although in a feat of forgetfulness I’d managed to leave my laptop on the tube on the way to the venue, the event went well and involved a number of demonstrations, including EXPLODING UNDERPANTS..! Watch the video of the event below, including the interview with Daily Telegraph journalist Tom Chivers and the Q&A with the audience. The themes of the book were also discussed after the public lecture on Twitter for a #RiChat, which is available on Storify to read through if you missed it. See also this list of upcoming events about The Knowledge.