Doctors often overestimate the knowledge of patients reports:

There’s a pesky cognitive bias that creates a honking big barrier to patients and families making the most of the health advice and services available to us. It’s the tendency of experts to overestimate the knowledge of others.

One consequence of expertise — or even just easy familiarity with a topic or institution or practice — is the inability to remember not knowing what you now know. Think back to your first day of school: You felt clueless, right? Was I supposed to bring crayons? Where’s the bathroom? But within weeks, the whole thing was routine. You couldn’t remember what you didn’t know, and you couldn’t recall what you might have needed to know in order to concentrate on learning to spell.