“Seeing is believing” [is] an approach to life that works well in many endeavours, including mechanical engineering, fishing, and perhaps dating. It’s also good, apparently, for residents of Missouri. But it doesn’t make for good science. Science is not just about seeing, it’s about measuring, preferably with something that’s not your eyes, which are inextricably conjoined with the baggage of your brain. That baggage is more often than not a satchel of preconceived ideas, post-conceived notions, and outright bias.
Neil deGrasse Tyson,
astrophysicist, American Museum of Natural History
Astrophysics for People in a Hurry, p. 90