Thanks Adam

Another climate change analogy, which respects Humean causality:

"We can’t say that steroids caused any one home run by Barry Bonds, but steroids sure helped him hit more and hit them farther. Now we have weather on steroids.” From this Bloomberg article: http://www.businessweek.com/articles/2012-11-01/its-global-warming-stupid#r=hp-lst

HT Adam, a commenter.