Long on theory, short on how-to.
The phrase "how-to" in a title implies that you're going to be given concrete tips for doing things. However, in this case, the word "thinking" comes first for a reason: Whitaker is long on thought models and theory, short on practical advice.
That's not necessarily a complaint. Theory has its places, and employers trying to inject creative thinking into their companies will benefit from Whitaker's explanation of what art thinking is and how you can go about implementing it. Actual artists, however, don't really need this one, unless they'd like to have a nice rhetorical framework to convince their own companies (everybody's got a day job, right?) that the office could be a bit more flexible and creative. There's also a bang-up defense of the humanities that gently explains, without getting indignant, why the arts still matter, which will no doubt come in handy for anyone who tends to sputter incoherently when someone argues fr their demise.
A neat addition to the canon of business literature, but definitely optional for most collections. Most suitable for business and corporate libraries. Definitely read it, though, if you are middle-to-upper management, as it may give you some insights on your creative talent, and why they are often dissatisfied with an overly rigid approach.