Extraterrestrial life Intelligent Design

Could Earth be in quarantine from space aliens?

The Percolation Hypothesis holds that they can’t overcome the laws of physics any more than we can and that colonies would lose touch with the home planet due to slow communications, thus losing interest in space travel goals. But now, if there is a purpose behind the universe, maybe we and the aliens weren’t intended to meet. That was C.S. Lewis’s view.