@sturgman

Of course its incomplete, this is social media afterall. It took me a life tine of study to become an expert on this subject, so that cant be conveyed in full over social media. But yes it does test for predictive causality. Which is a fancy way if sayibg does the existance of one event (gun law changes) predict another event (change in homicide). This is usually what we mean when we talk about causality.

@AndyLowry @protecttruth