Three stars. Unrated. 98 minutes. Werner Herzog has explored the known world from the Amazon and Antarctica to the prehistoric cave of Chauvet. It seems only fitting that he would set his restless, perpetually questioning sights on the Internet, the ether where we spend increasingly more of our lives, at their most public and most intensely secret. Herzog’s documentary “Lo and Behold: Reveries on a Connected World” is just what its title promises: A series of ruminations, each its own 10-to-15-minute chapter, on the origins, implications, moral ambiguities and latent possibilities of a medium we’ve absorbed readily, almost reflexively, without much consideration of the consequences. Beginning at UCLA, where the first message was sent on what would become the Internet, and traveling the globe to interview engineers and astronomers, philosophers and hackers, robotics experts and refuseniks, Herzog creates an intriguing bookend to Alex Gibney’s “Zero Days,” which examined the looming dangers of cyberwarfare.