Well I agree but I see it like a pyramid. You don't have to worry about people at the bottom of the knowledge pyramid getting access to the last breakthrough i

Well I agree but I see it like a pyramid. You don't have to worry about people at the bottom of the knowledge pyramid getting access to the last breakthrough in some field if they don't already know the basics about that field. They will naturally access it when they "climb" this pyramid of knowledge through more specialized sources or studies. More over : the population of people who are good at doing something isn't necessarily the same as the one good at explaining it. It's like saying Newton would have to spend 20% of his time explaining to 14yrs old kids what he's doing when someone less capable than him would do it as good but would leave Newton free for what he does best.