I didn't use an ad hominem. <<<< That should be taken as a hint that the way many people use the term "ad hominem" to signify just any ole insult is a misuse of the phrase.
from your post:
"I didn't equate hands with "manual implements" - only an illiterate would do so, or think that I had done so. I said that hands are one of a number of "manual implements".. "
That's ad hominem. You were trying to attack me, rather than my post.