Statistics helps us make sense of a universe where everything is potentially connected to everything else, to one degree or another:
We can’t handle all of that simultaneously, so we create smaller simplified versions of reality that we call “models” – paying attention to only a few things and hoping everything else cancels out. Models are generally CAUSAL – they are claims that some things cause other things – and we’re usually interested because we think this might let control things better. Human beings are all about control! We’d like the world to boil down to things like this:
See? Not so tough!