[joe_the_user]

If some data is wrong and you can't tell which is which, how can you trust just some parts of this book?

That's kind of the same problem that a psychology researcher faces; some of their data is going to be wrong.

The question winds-up being how "robust" your claim is, can you survive having some points being wrong? For Thinking Slow And Fast, the robustness of the claims is kind of a mixed bag imo.