“Seibel: Some people love Lisp syntax and some can't stand it. Why is that? Deutsch: Well, I can't speak for anyone else. But I can tell you why I don't want to work with Lisp syntax anymore. There are two reasons. Number one, and I alluded to this earlier, is that the older I've gotten, the more important it is to me that the density of information per square inch in front of my face is high. The density of information per square inch in infix languages is higher than in Lisp.”