Sometimes the pendulum of our belief swings too far. For example, our perspective on what’s possible.

Before the Renaissance, there were plenty of things that were deemed absurd. If you told Henry the Eighth his descendants would one day carry a device allowing near-instant communication with anyone on the planet, he might break into a condescending smile and then have you committed to some fetid hoosegow where you wouldn’t annoy his subjects.

Hank’s attitude seems cramped and unimaginative today, and so naturally we’re on guard about being too quick to condemn an outlandish idea. We’ve seen too many instances of fantasy becoming fact.