"Imagine a First Contact without contact, and an alien arrival where no aliens show up. Imagine the sudden appearance of exclusion zones all over the planet, into which no humans are allowed. Imagine an end to all violence, from the schoolyard bully to nations at war. Imagine an end to borders, an end to all crime. Imagine a world where hate has no outlet and the only harm one can do is to oneself. Leaders of governments are not in the loop. Scientists...