The “Design Patterns” book is one of the worst programming books ever. Yes, really. I’m 100% dead serious when I say that I think it has set (and will continue to set) the progress of software development back by decades. Why?! Let me offer up a parable; I will call it “The Plank.” The Plank Back when I took computer science, as part of the curriculum was a compulsory class in statistics. Two of m