The thesis is that we are “addicted to experts” and when listening to experts, some research shows we basically stop thinking. Instead, we should continue to think for ourselves and must be willing to dissent from and to confront experts (who can be wrong more often than many may admit).
Prof. Noreena Hertz taught and conducted research at University College London at the time this talk was presented in 2010. She has expounded on this thesis in a later book (which I have not yet read)
Unfortunately, I have been burned by “experts” on numerous occasions so I rarely accept an expert’s statement without doing critical analysis of my own. Sorry to say.