I firmly believe that every single person can learn any single concept in the world, given sufficient instructional time, resources, and contact. However... th

I firmly believe that every single person can learn any single concept in the world, given sufficient instructional time, resources, and contact. However... this should not be confused with a belief that every single person can learn any concept in an economically scalable manner and useful period of time. In a world of limited resources, this can be a very important distinction.