People feel like if they don't have a voice or a name or the spotlight, then they're invisible. But if you can't wake up in your world, in your life, with your family and your friends, and enjoy it, then forget it. All bets are off, because that's all anybody is guaranteed.
But. . . the working scientist. . . is not consciously following any prescribed course of action, but feels complete freedom to utilize any method or device whatever which in the particular situation before him seems likely to yield the correct answer. . . . No one standing on the outside can predict what the individual scientist will do or what method he will follow.