I suspect that I might have developed 98th-percentile fluid IQ rather than being born with it, as a result and remediation of that memory deficit, which did come factory-installed.
You discount the value of rote memorization. It's the ONLY thing that allows people of average intelligence to function as specialists in any role, and that specialization is generally essential to occupational success in this age. Had I been born in 1501, I'd have been highly valued.