The author agrees with Gladwell that to become pretty "good" at anything you will need to work hard at it(10K hrs). But the theme of the book is 'outliers', an

The author agrees with Gladwell that to become pretty "good" at anything you will need to work hard at it(10K hrs). But the theme of the book is 'outliers', and Gladwell over simplifies saying that all it takes to be an outlier is 10000 hrs of work - which is not the case apparently, some people achieved this without as much effort and it is likely some people require a lot more effort than 10K hrs to be "as" good and considering that, it is not really clear what the outlier benchmark cutoff hrs is. The underlying message which Gladwell conveys that to be outlier at anything, all you need is 10,000 hrs of work does not seem to hold true for all individuals in all fields.