What has surprised you over the last twenty years? My list? Life! Beyond this, 9/11 without a doubt. The internet to some degree. The Arab Spring, Facebook and Twitter addiction and the lack of real interest in things such as ethics and other people in general.
What is hidden in plain sight right now that’s likely to change the world over the next 20 years? I’d say societal ageing and resource prices. Also the speed of developments in areas such as genetics, synthetic biology, AI, brain-machine interfaces and so on.