>On Jan 1, 2013, at 8:32 AM, GS Chandy ><email@example.com> wrote:
>> In regard to your son's having "understood the concept >> of infinity, ... etc", I would suspect that your >> having "taught him well" had less to do with it than >> his own natural "propensity to learn".
>How would you even know that?
The power of lists. Make enough lists, Bob, and you would know it, too.