Let us recap:
your post 1931:
"PS. If you can find me a manmade object that cannot be identified as such via evidence of the application of manual implements, or alternatively of a non-manmade object that evidences the application of manual implements, then I'll reconsider."
I suggested a clay figurine which would be manmade but without implements.
You then equated hands with "manual implements" and then suggested that an implement could be divine, requiring the use of "manual" to modify "implement".
My suggestion is that the terminology, as you are using it, could be confusing.
And my next boundaries question is how you would deal with a hand twined piece of fiber, say from a rotted piece of a a nettle or flax.
Making steel guitars and pipe organs "pedal instruments"?
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"..
When in doubt, look up the words, because I use words as they are properly defined unless I quite clearly state otherwise.
Anything that a hand has touched will have evidence of being touched by hand, unless it has been further modified, in which case it will evidence the further modification. If in doubt, go look up the word "forensics" and "DNA"..
I reject this inane, contrived notion that objects must be identified at a glance. If you're confused, pick it up and study it.