 The answer is, let's say you have the world's most talented heart surgeon, right? Unbelievably smart guy, IQ in the top 98th percentiles. Smarter than only 2% of people probably smarter than this guy or as smart, right? Guy's a genius by every technical and aptitude and achievement standard. You let him change the oil on your 1992 Dodge Viper Classic there? No. Well, why not? He's smart.