There is a possibility of the hakeem being legit and being an expert and being able to dig up ones medical history by checking his pulse is no big thing in the field of hikmah, and he's right the only changes you make are dietary, however after 4 weeks he'll be able to tell more.
But to generalise it under sihr, muakill, hamzaad, psychological tricks is nothing but absurd to me. As this field has nothing to do with these things, will shoe my friend who's grandad was a famous hakeem so he can have a good chuckle which I'm sure he will when he reads the Generalisations.
You can also learn from expert practitioners and people still do and also at a school and these places have been around from time and students are taught by experts in the field.

