Recently, I concluded that our understanding of expertise, especially in the sense of the 10,000 hour meme, is seriously flawed. Even though there is something real there. And I don’t just mean the understanding conveyed by Malcolm Gladwell, who popularized the idea. I include the primary researchers such as K. Anders Ericsson on whose work the popular accounts are based.
The problem isn’t what you might think. It’s not the basic model of 10,000 hours of practice coupled with metacognition that’s the problem. The observation that you can get to useful levels of skill short of mastery in less time doesn’t fundamentally challenge the model. Nor is there a serious problem with the ideas that practice is necessary or that practice without metacognition is insufficient. That’s all true enough. Nor is the idea vacuous and tautological as some suggest.
The real problem is that research on expertise focuses on fields where “expertise” is a well-posed and objectively codified notion. This means mature fields that are closed and bounded, and can be easily observed, modeled and studied under laboratory conditions. So it is not surprising that the work of researchers like Ericsson is based on fields like “medicine, music, chess and sports” (Wikipedia) or “music, science, golf and darts” (Ericsson’s own website).
Notice something? They’re all sharply circumscribed and regulated domains.