How to Express Dependencies Between Business Logic and Business Logic

Duke: I was, I call it a two-pole. I say two-pole, but I've heard smart people say both. A structure with two items in it. So what you're saying is in order to efficiently call the model function, you have to a first called the query set function on the query set. Okay, so does that make sense? You can then compose those into big trees of things,. Each one sort of modifies the query set in some way. And then you evaluate your query set and you then iterate over the query set and call each of the functions that returns the values. It's an elegant way of building the thing that we had before