Please look at the following youtube video https://www.youtube.com/watch?v=8B271L3NtAw

Please look at the following youtube video https://www.youtube.com/watch?v=8B271L3NtAw, the danger of mixing up causality and correlation then think about the following question:

When two variables are correlated, it means that they are associated with one another.  But if they are associated with one another, then why doesn't one cause the other?  Can you think of other examples like the one in the video?