When you buy something as simple as a refrigerator—something that was designed by a team of engineers to be as easy to use as possible—it still comes with a fifty-page user’s manual! That manual gives you helpful information about every single feature plus exact instructions to follow in case you experience difficulties. And yet, when it comes to the single most complex object in the known universe (your brain), you’re lucky if you get even a hint as to how to actually use it.
