Don’t get caught again. Never, never, never. That was the Golden Rule, the only important rule. - Charles Sheffield

It is very clear that nothing in nature presents such a danger to the human race is our own actions.

His sin was something that scientists had done for thousands of years. Scientists didn’t usually change data, not unless they were outright charlatans. But when facts didn’t agree with theory, there was an awful temptation to find reasons for rejecting the offending data and and hanging on to the theory. Ptolemy had done it. Newton had done it. Darwin had done it. Einstein had done so explicitly.

But no one, no matter how intelligent, could make good inferences from bad data.