The brain cannot reach its inner conclusions by any logic of certainty. In place of this, the brain must do two things. It must be content to accept … - Jacob Bronowski

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The brain cannot reach its inner conclusions by any logic of certainty. In place of this, the brain must do two things. It must be content to accept less than certain knowledge. And it must have statistical methods which are different in kind from ours, by which it reaches its acceptable level of uncertainty. By these means, the brain constructs a picture of the world which is less than certain yet highly interlocked in its parts.