amongst us is -- ya keeps the peepers open, and seem to remember all that stuff.

Yup, heard that one re eye-rings.

In the olden days, Doctors.. ackshully Looked at people and not CRTs
-- eyes-cast-downwards as they struggle to fit the boilerplate 'advice' to the remaining 2.7 minutes of this pesky interview.

They looked at tongues (LOTS there), in the ear canal == THEMSELVES
They looked closely at skin - our largest organ and most visible. Duh.
(They pinched it, too -- see effects of aging, smoking and other habits)
They looked inside nostrils -
They ... ...

I'd pick an authentic Shaman over the 98% - if I could.
These have been taught to Observe and remember, since tykedom.
(But the Best are too smart to want to live here.. voluntarily)