79One of the key insights that has been gleaned from the past few centuries with regard to doing science can be summed up by the phrase, “If I am wrong, how would I know?” Asking this question regularly is not just a healthy practice for scientists, but a good habit for anyone who endeavors to make sense of world in a rational way. Raising this question in public is also an effective way to trouble the waters when people are excessively sure of themselves. 1