I typically determine the value of a business or self-help book by the number of times I stopped to highlight portions of it along the reading journey. After recently finishing Think Again, by Adam Grant, I can say it's easily the most highlighted and thought-provoking book I've read in quite some time.
In fact, there are too many highlights to squeeze into this article so I recommend you buy a copy of your own. In the meantime, here are just a few of the best excerpts I'm still thinking about...
The curse of knowledge is that it closes our mind to what we don't know.
The single most important driver of a forecasters' success was how often they updated their beliefs. The best forecasters went through more rethinking cycles.
As a general rule, it's those with greater power who need to do more of the rethinking, both because they're more likely to privilege their own perspectives and because their perspectives are more likely to go unquestioned.
When we try to convince people to think again, our first instinct is usually to start talking. Yet the most effective way to help others open their minds is often to listen.
Resisting the impulse to simplify is a step toward becoming more argument literate.
When someone knowledgeable admits uncertainty, it surprises people, and they end up paying more attention to the substance of the argument.
Rethinking is more likely to happen in a learning culture, where growth is the core value and rethinking cycles are routine.
A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die.
In the face of any number of unknown and evolving threats, humility, doubt, and curiosity are vital to discovery. Bold, persistent experimentation might be our best tool for rethinking.