> 6. Causation does not imply correlation: https://arxiv.org/abs/1505.03118 https://arxiv.org/abs/1505.03118 And in the paper, from the abstract, > We demonst

> 6. Causation does not imply correlation: https://arxiv.org/abs/1505.03118 https://arxiv.org/abs/1505.03118 And in the paper, from the abstract, > We demonstrate that the Faithfulness property that is assumed in much causal analysis is robustly violated for a large class of systems... In preliminaries, > The Faithfulness assumption is that no conditional correlation among the variables is zero unless it is necessarily so given the Markov property. So probably a more accurate laymam description would be "not all causations are observable as a statistical correlation relationship".