# 悖论趣谈（一）

$\Pr(C = 1 \mid D = 1) > \Pr(C = 1 \mid D = 0)$

$\Pr(C = 1 \mid G = 1, D = 1) < \Pr (C = 1 \mid G = 1, D = 0)$$\Pr(C = 1 \mid G = 0, D = 1) < \Pr (C = 1 \mid G = 0, D = 0)$

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And God opened her eyes, and she saw a well of water; and she went, and filled the bottle with water, and gave the lad drink.