The article seems to claim exactly that: that the interviews with Deepak et al are anecdotal at best, and don't add much substance to the author's claims. Seem

The article seems to claim exactly that: that the interviews with Deepak et al are anecdotal at best, and don't add much substance to the author's claims. Seems like this is one of those countless self improvement books: built around a premise that makes intuitive sense (here: having an outlet apart from work improves your performance at work) and listing tons of anecdotes to ingrain the idea further. Basically, a blog post padded with stories to make a sellable book. I'm not the biggest fan.