Isn't the important thing whether or not tutoring produces a higher percentage of Darwins compared to our current model of schooling? If it does, then shouldn't we expend some effort on identifying students that are more likely to become a Darwin and then provide them with high quality, publicly funded tutoring? We all benefit from the discoveries of geniuses like Darwin so it is in our common interest to make sure that we produce figures of that stature as often as possible.