I thought "category theory" was a very strange thing to include in the list, so I searched down and found this equally strange comment: "I wish I had time to sp

I thought "category theory" was a very strange thing to include in the list, so I searched down and found this equally strange comment: "I wish I had time to spend a year learning category theory to better understand how to structure things to be compositional". This is akin to saying, "I wish I had time to spend a year studying fluid dynamics so I can learn how to fly a plane".