Starting Again

According to Malcolm Gladwell (from Hayes, 1978) it takes 10,000 hours to obtain mastery. About three hours a day for ten years. I wonder if anyone has thought of how long it takes to become intermediate or just competent?

Maybe it only takes 2,500 hours to have a competence in a subject, i.e. that you are able to carry out the task in an unspectacular or inconspicuous fashion. What about 5-7,500 hours to become intermediate, i.e. that you are able to carry out the task in fashion worthy of promotion or such that it can be commended?

To be a jack or all trades and a master of none or someone who makes mistakes in a niche (an expert)?

Hayes, J. R. (1978). Cognitive psychology: Thinking and creating. Homewood, IL: Dorsey Press