Don't blame me, this was your specification.
I said "known to be an arrowhead". There are rocks we have already established to be arrowheads. Get me one of those.
I had no functional concept in mind. I just thought that it was an arrowhead fashioned by intelligence. I did not say a small game arrowhead fashioned by intelligence.
Apparently we can't even have a hypothetical without there being deception involved.