One obvious design strategy would be for the genes to prewire for the skill. The genes would provide detailed step-by-step instructions to build the precise circuits needed to perform the desired skill: to play music, or juggle, or do calculus. When the right stimulus came along, all the prebuilt wiring would connect up and start firing away, and the talent would appear: Babe Ruth starts whacking homers, Beethoven starts composing symphonies. This design strategy would seem to make sense (after all, what could be more straightforward?), but in fact it has two big problems.
