I guess it depends on what you understand by similar/dissimilar rates of learning. All students are humans and even further they are humans who managed to acces

I guess it depends on what you understand by similar/dissimilar rates of learning. All students are humans and even further they are humans who managed to access that school. So you will not find the difference between a potato and an ascendant god. Meaning the college students are more similar than they are different and findings will reflect that. On the other hand somebody learning even 5% faster all their life will gather a massive difference over the years. And in particular I don't think this conclusion is warranted: > Our evidence suggests that given favorable learning conditions for deliberate practice and given the learner invests effort in sufficient learning opportunities, indeed, anyone can learn anything they want. There's a lot of "given" in there. And you can not expect to invest infinite energy in providing motivation and personalized conditions for everybody. At the end of the day even if intellect, talent and learning speed would be equal, which they are not, somebody who can self motivate and learn in less than optimal conditions will go further.