The distinguished Dr. Richard Feynman gave a speech in 1974 to Caltech called "Cargo Cult Science", here it is. He recall's how scientists interpreted the work of Millikan another Nobel Laureate who did some research called the oil drop experiment. Feynman laments that the scientists who followed Millikan were slow to correct errors although they got there in the end. "We've learned those tricks nowadays," says Feynman. The word "tricks" jumps out at me. Isn't that what global warming skeptics are banging on about when they read the CRU emails. Well, there you have it, back in '74 the word trick is used in a scientific context to mean something perfectly innocent. Cargo Cult Science, by the way is well worth a read.
Google Einstein's trick and you will find gravitational lensing the observation that proved light waves are bent by gravity.