Mastermind: How to Think Like Sherlock Holmes

you get only one thing out of this book, it should be this: the most powerful mind is the quiet mind. It is the mind that is present, reflective, mindful of its thoughts and its state. It doesn’t often multitask, and when it does, it does so with a purpose.

focus and performance: (1) thinking ahead, or viewing the situation as just one moment on a larger, longer timeline and being able to identify it as just one point to get past in order to reach a better future point; (2) being specific and setting specific goals, or defining your end point as discretely as possible and pooling your attentional resources as specifically as you can; (3) setting up if/then contingencies, or thinking through a situation and understanding what you will do if certain features arise (i.e., if I catch my mind wandering, then I will close my eyes, count to ten, and refocus); (4) writing everything down instead of just thinking it in your head, so that you maximize your potential and know in advance that you won’t have to try to re-create anything from scratch; and (5) thinking of both repercussions—what would happen should you fail—and of positive angles, the rewards if you succeed

As neurologist Marcus Raichle learned after decades of looking at the brain, our minds are wired to wander. Wandering is their default. Whenever our thoughts are suspended between specific, discrete, goal-directed activities, the brain reverts to a so-called baseline, “resting” state—but don’t let the word fool you, because the brain

The effect goes beyond simple self-report and plays out in decisions that matter a great deal. On rainy days, students looking at potential colleges pay more attention to academics than they do on sunny days—and for every standard deviation increase in cloud cover on the day of the college visit, a student is 9 percent more likely to actually enroll in that college. When the weather turns gray, financial traders are more likely to make risk-averse decisions; enter the sun, risk-seeking choice increases.

There is no such thing as the “objective” environment. There is only our perception of it, a perception that depends in part on habitual ways of thinking (Watson’s disposition) and in part on the immediate circumstances (the sunny day). But it’s tough for us to realize the extent of the influence that our attic’s filters have on our interpretation of the world.

By the time he has opened his mouth—even before he has even quite made it to the group’s periphery—you have doubtless already formed any number of preliminary impressions, creating a fairly complete, albeit potentially inaccurate, picture of who this stranger is as a person

Today, it is commonly accepted that memory is divided into two systems, one short- and one long-term, and while the precise mechanisms of the systems remain theoretical

in learning to understand the layout and functionality of our own brain attic we take the first step to becoming better at exploiting its features to their maximum potential—in other words, to learning how to optimize our own thought process

He held the paper close to his eyes and rather sideways, proving not only a high degree of myopia, but marked astigmatism

So, light that fire, curl up on that couch, and prepare once more to join Sherlock Holmes and Dr. John H. Watson on their adventures through the crime-filled streets of London—and into the deepest crevices of the human mind