We make that judgment about what’s “known” based on everything we’ve experienced already—and as O’Neill notes, “the more we see, hear, touch, or smell something, the more hard-wired in our brain it becomes.” We routinely “default to the set of knowledge and experience each one of us has.” This works well under most circumstances, but when we wish to move beyond that default setting—to consider new ideas and possibilities, to break from habitual thinking and expand upon our existing knowledge—it helps if we can let go of what we know, just temporarily. You have to be adventurous enough (and
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