Loeb, Johanson, Wilson: Leading Scientists Bloviate on What Nobody Knows

Nobody knows scientifically if aliens exist. Nobody knows scientifically what the meaning of life is, or the true content of morality. When scientists speculate on such things, their opinions may be interesting -- after all, they are smart people -- or maybe not. However they have left science behind, not that that serves as a discouragement in some quarters. The scientist's only advantage may lie in the sophistication of his ignorance.

Nevertheless, when it comes to ultimate questions, the me...