We find a similar proportion of ignorance if we probe deeply into the cell, or the brain. We don’t know nothin’ relative to what could be known. Our inventions allow us to spy into our ignorance. If knowledge is growing exponentially because of scientific tools, then we should be quickly running out of puzzles. But instead we keep discovering greater unknowns. Thus, even though our knowledge is expanding exponentially, our questions are expanding exponentially faster. And as mathematicians will tell you, the widening gap between two exponential curves is itself an exponential curve. That gap
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