I don’t like Rich’s appeal to human intuition and the physical world as justification for not using—and even disparaging—mathematical structures. His quote from

I don’t like Rich’s appeal to human intuition and the physical world as justification for not using—and even disparaging—mathematical structures. His quote from memory was something like “There’s no such thing as a Maybe Sheep,” and that was aggravating to listen to. He then gives the simplest possible examples, and fails to convince me that his approach scales to the real world. At some point he starts talking about what a “person” is and what an “address” is and, somewhat in jest, he says something like “I know I know addresses are difficult this is just a simple example.” It’s precisely the difficult case that I want to see his “intuitive” view of programming actually work out. Rich is a good speaker but I don’t find the line he toes to be agreeable.