I came across this interview with Hadley Wickham, the creator of one of the most widely used R packages, ggplot 2. I thought that this quote was interesting: I’m also really interested in statistical learning as a family of modeling techniques, a kind of fitting them together very well and forming a grammer of models. You can make a new model by joing things together, just like the grammer of graphics by which you can come up with a new graphic that is just a new arrangment of existing …