> This is classical A causes B and B causes C, so A leads to C Another one is salt intake raises blood pressure and high blood pressure causes heart attacks.

> This is classical A causes B and B causes C, so A leads to C Another one is salt intake raises blood pressure and high blood pressure causes heart attacks. The reality is more complicated: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(16)30467-6/fulltext https://www.thelancet.com/journals/lancet/article/PIIS0140-6...