But let's suppose the correlations are due to causation: good parenting makes good kids, and day-care makes for very slightly smarter, but also slightly less well-behaved kids.
现在假定这种相关性是一种因果联系：父母好的教养造就优秀的孩子，日托中心造就相对聪明一点，但行为表现稍差的孩子。
But it remains to be that our evidence for causation is always a correlation.
但是我们对因果的证据，还是相关性。
But a correlation is just isn't simply sufficient enough for evidence of causation is it?
但是相关性不足以，成为因果的证据，不是吗？
But what we are saying is that a correlation isn't sufficient for a causation but it is the only evidence we are ever likely to have.
但是我们说的是相关性不足以，证明因果，但是他只是证据，我们可能有的。
But what we are saying is that a correlation isn't sufficient for a causation but it is the only evidence we are ever likely to have.
但是我们说的是相关性不足以，证明因果，但是他只是证据，我们可能有的。
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