I enjoy the book How Doctors Think... it is a very easy read and informative in procedures doctors take in order to make a decision. Particularly in Chapter 5, A Mother's Challenge, I was left with a few questions. First, after Rachel wanted Shira's blood re-tested, WHY on earth would the doctor say to her, "Shira had already been tested and that retesting would require a laboratory researcher to needlessly put aside other work"?! I would be very insulted if I was in Rachel's position. Isn't that their job? No matter how much the doctor though re-testing Shira's blood would be futile, Rachel is paying for the services after all, is she not? I understand a doctor saying no to a parent in certain cases, perhaps if it is something really outrages, but I don't think blood tests are THAT insane of a request? Next question, in the kind of conference where Shira Stein's case was discussed, why is there no discussion on the "cognitive errors occurred and how they could have been remedied"? I understand the conference was to discuss Shira's case/educating doctors about arcane and important disorders, but it makes sense to discuss why something could potentially be misdiagnosed or something, no? It was the case with Shira. Misdiagnosis, so why wouldn't they discuss why it happened? Last question, what does the whole "finding a zebra" and "zebra retreat"? That didn't make sense to me or how/why it was linked to Shira.