Hello dear

How are we feeling today? Not too good? Well never mind. Doctor will see you soon.

Now, in the meantime how 'bout I have a quick gander and decide for myself whether you should live or die?

No?

Why ever not?

You can trust me. I'm a nurse.

Frankly the only nurse I'd be prepared to trust to pronounce on my health is one who has requalified as a doctor. And she's a specialist oncologist in research centre these days.