There was a study in the 1960s that presented alternately two plausible hypotheses, I think about the influence of socioeconomic class on something. The subjects were shown fake experimental evidence to support one of them, after which they thought it was obvious that the one shown was true.
The basic result was to show, how easy it is for us to be convinced by any story if it is made to sound plausible.
Can anyone help me find this paper? I can't remember where I saw this short summary of it, but it is likely a textbook example. What's been done on the topic since then?