It is possible that a scientific discovery will be made that humans will later regret because it has awful consequences. The problem is, we probably would not know in advance and, once the discovery is made, it cannot be undiscovered.
“It's the fans that need spring training. You gotta get 'em interested. Wake 'em up and let 'em know that their season is coming, the good times are gonna roll.”
“In almost the same way you know what your grandmother looks and sounds like, you know what Bruce Willis looks and sounds like.”