Best-in-Field Fallacy

The best-in-field fallacy occurs when it is assumed that the "best" theory is accurate or even a good theory.

Examples of the Best-in-Field Fallacy

Bill Nye arguing against Creation science: "So, everybody, just take a little while and grasp this fundamental idea. It’s how you fit in with nature around you. So, as the world changed, as it did for the ancient dinosaurs, they were taken out by a worldwide fireball, apparently caused by an impact."

Bill Nye is using the logical fallacy of unsupported assertion. The fireball story is just a story. It ought to be stated as a belief without any proof that this was the cause of the death of the dinosaurs. "That’s the best theory we have." Bill Nye is using the best-in-field fallacy. Here, Bill gives his proof that this is what happened to the dinosaurs. His proof is that this is the best theory that they have. That is a fallacy. It proves nothing. In fact, there is a lot of evidence that the dinosaurs gradually went extinct, largely by being killed by humans.

Sandy: "Evolution must be true because it's the best theory we have."