wrong question. depends on who you ask. The right question is if you think based on TOC, you like it, buy it. I have been reading the author's newsletter for a while now, and know he is doing a hell lot of work educating himself and us in the process. the book is mostly a work about his experience, which he has mostly shared already, but some new things obviously (which i think he will share over time). unless you do this for a living, you cannot match this reference. So, these were my 2 cents worth of shit talk.