I thought this was an exceptional talk. It is absolutely packed with data, and presents an exciting biological perspective on the exponential nature of the growth of human technology. If you like good research then you will probably like this. The message is basically that any technology can and most likely will get eaten by something better that comes along, and with exponentially increasing probability with time. Got it. The talk then turns into a forecast of technology through 2030 or so. Fairyland, yes. But fun.