Discovering truth in data always begins with you, and your judgement. Assume that you have some idea about the world. Something that you believe is true, and you want to discover if you’re right. Here’s how I draw out that out. It becomes a matter of organizing a dataset along those thoughts. I call causal variables X1, X2, X3… I call the single variable that I’m trying to explain the Y variable. There can be only one Y variable. For your own sanity, there can only be one Y variable at a time. There are a large number of tasks to figure out if X1, X2, X3 cause Y. One of them is to run any one of the many[…]