> But he had already spent a lot of time on the research and was convinced his hypothesis was valid. The four most dangerous words are: "It just makes sense."

> But he had already spent a lot of time on the research and was convinced his hypothesis was valid. The four most dangerous words are: "It just makes sense." If it hasn't been subject to public testing by systematic observation, controlled experiment and Bayesian inference, it doesn't matter if it makes sense or not. It isn't knowledge.