Waste of time.

I was expecting it to analyze real problems, like how the chain of command gets broken in big companies. I was expecting questions like "how to ensure people focus on something useful?"
"What to do if you're CEO, middle manager, or junior developer wanting to help the system?"

Instead, I got boring advertisements of companies from the title page (Google, MyFitnessPal, Nuna, and so on). The story is the same everywhere "we're an awesome company, we had no problems, but decided to adopt OKR, now we don't have any problems". Seriously?