Functional Expertise

"Jo, talk to the doctors. Find out everything there is to know about lactic acidosis."
--Lt Daniel Kaffee (A Few Good Men)

Nice point here. Determined minds are capable of developing high degrees of proficiency on a subject in a short amount of time.

Litigators become experts in every case’s subject matter. They have to in order to depose scientific experts. It’s not a remarkable skill.

— Stacey Rudin (@stacey_rudin) August 2, 2020

One does not have to be a credentialed 'expert' to develop functional expertise.

After all, if lawyers are capable of doing it, then it is within the grasp of anyone.