"We're due for a shift in the definition of what it means to be human," one scientist says; with Lo and Behold, Reveries of the Connected World, Herzog regards that sentiment with a healthy measure of both awe and skepticism.

In a way this a companion piece to 2010's Cave of Forgotten Dreams, with an awe attached to the idea of creation that mostly precludes discussing topics such as hacking, fake news and cyberwar.

Werner Herzog investigates the internet in his own entertaining and idiosyncratic way.