a recent article about the Polgar chess sisters would provide strong evidence to counter point (b). (Recap- they were all taught chess intensively starting at

a recent article about the Polgar chess sisters would provide strong evidence to counter point (b). (Recap- they were all taught chess intensively starting at age 4 and they are among the best chess players in the world. Also, all the great modern chess players learned chess at very young ages.) Certainly not everyone has the ability, but perhaps a bigger problem is finding ways to make it as fun as games are for children.