As a counterpoint, there are real sharp people of all ages. At local meetups, I've met a couple of retirees not orignally in the programming field, (medical doctor, aerospace tech) that have picked up Linux and programming well enough, I'd hire them to build software/hardware for me if they weren't pursuing their own projects. Or the older opera singer that helped me debug code while on a flight and joked, "Programming is music for those that can't sing...". I believe she could succeed in any field, scary, scary, scary smart.