"Whether individual or collective, willful blindness doesn’t have a single driver, but many. It is a human phenomenon to which we all succumb in matters little and large. We can’t notice and know everything: the cognitive limits of our brain simply won’t let us. That means we have to filter or edit what we take in. So what we choose to let through and to leave out is crucial. We mostly admit the information that makes us feel great about ourselves, while conveniently filtering whatever unsettles our fragile egos and most vital beliefs. It’s a truism that love is blind; what’s less obvious is just how much evidence it can ignore. Ideology powerfully masks what, to the uncaptivated mind, is obvious, dangerous, or absurd and there’s much about how, and even where, we live that leaves us in the dark. Fear of conflict, fear of change keeps us that way. An unconscious (and much denied) impulse to obey and conform shields us from confrontation and crowds provide friendly alibis for our inertia. And money has the power to blind us, even to our better selves.

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"Our blindness grows out of the small, daily decisions that we make, which embed us more snugly inside our affirming thoughts and values. And what’s most frightening about this process is that as we see less and less, we feel more comfort and greater certainty. We think we see more — even as the landscape shrinks.

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"The most crucial learning that has emerged from this science is the recognition that we continue to change right up to the moment we die. Every experience and encounter, each piece of new learning, each relationship or reassessment alters how our minds work. And no two experiences are the same. In his work on the human genome, the Nobel laureate Sydney Brenner reminds us that even identical twins will have different experiences in different environments and that that makes them fundamentally different beings. Identical twins develop different immune systems. Mental practice alone can change how our brains operate. The plasticity and responsiveness of our minds is what makes each of us most remarkable… We aren’t automata serving the master computer in our heads, and our capacity for change can never be underestimated.

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"We make ourselves powerless when we choose not to know. But we give ourselves hope when we insist on looking. The very fact that willful blindness is willed, that it is a product of a rich mix of experience, knowledge, thinking, neurons, and neuroses, is what gives us the capacity to change it. Like Lear, we can learn to see better, not just because our brain changes but because we do. As all wisdom does, seeing starts with simple questions: What could I know, should I know, that I don’t know? Just what am I missing here?"  --Margaret Heffernan