The speaker says human cognition is impaired by confirmation bias and motivated reasoning.

“of data efficiency and humans are fabulously data efficient on many problems not all and then we have problems like we have cognitive impairments such that we have confirmation bias and motivated reasoning you know motivated reasoning is like um i you know want this argument to be true and so i kind of you know play little games and we all do this i mean scientists are better because we recognize the behavior in ourselves and try to self-correct but scientists do it too”