If you want something more substantial than the diagram in my earlier comment, I recommend When does age-related cognitive decline begin?.[1] The figures on pag

If you want something more substantial than the diagram in my earlier comment, I recommend When does age-related cognitive decline begin?.[1] The figures on pages 11 and 12 are depressing, but the study seems pretty sound. Many of the replies to my comments are misconstruing me. I'm not saying that older people are useless, or that they can't learn, or that they should be discriminated against. I'm simply saying that if you select the very best and blind yourself to age, your sample is likely to skew younger. This is due to the effects of aging, including the aging brain. Nobody contests this when it comes to sports, including mental ones such as chess. Why should it not also be true for startups? 1. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2683339/pdf/nihms104392.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2683339/pdf/nihm...