I thought it was, at its core, research made by K. Anders Ericsson ("The Cambridge Handbook of Expertise and Expert Performance"), but I have to confess that I

I thought it was, at its core, research made by K. Anders Ericsson ("The Cambridge Handbook of Expertise and Expert Performance"), but I have to confess that I have read neither author, so could you please expand on why it is anecdotal? Thank you! UPDATE: Wow there seems to be a lot of information in previous HN threads such as https://news.ycombinator.com/item?id=7323837 https://news.ycombinator.com/item?id=7323837 or https://news.ycombinator.com/item?id=8197102 https://news.ycombinator.com/item?id=8197102 and a response to my question in https://news.ycombinator.com/item?id=8197467 https://news.ycombinator.com/item?id=8197467