Bear 742,
I think you are right on, except for my doctorate.
Ag is the symbol for silver, which I have spent all of my professional life turning into gold. ( If you don't believe it can be done you should see what my prints sell for ) The doctorate is self anointed. Hence I am "the Silver Doctor".
Modern man likes to think we we are so clever with things like muscle memory, mentally performing a skill, etc. Not surprising the ancients were working on the same things. Just goes to show -- there is nothing truly new under the sun.
AgMD