Point is we may not be able to solve the aging problem, however as we progress we our children will be smarter to grasp complex subjects in shorter time. How much short time? That will depend on the intellect of the child. When I was in 8th standard my father told me that if I can I should finish all the math books upto 12th standard in a year. It may not be a full proof knowledge but it will give me some vision about what the math world looks like. I tried and succeeded partially (No claims here just what happend in my life). It was wonderful to know the world of maths. So we need to expose our young minds to so called advance topics in the subject of their choice. We do not know who is a genius. Moreover, a genius will eventually find a way to solve a problem that he/she wants to solve. Why? My guess - because he/she is a genius(also we do not know how a human brain works now and how it will work in the future).