Do you have some studies where unexpected rationality was discovered?
The one I remember is about "loss aversion" where it turned out that people were making reasonable choices, but not ones based on the simplistic probabilities that the researchers had designed for their experimental method. Another one is the "marshmallow test" where it turns out that some children have a reason to not trust adults. I don't have detailed references or anything like that.
We all "know" that people behave irrationally, yet studies that attempt to demonstrate systematically irrational behaviors end up producing weak or irreproducible results. Or, the studies uncover rational behaviors that the researchers didn't expect.