Dude, you completely missed the point of that post. It literally says in the second sentence that Scheme's numeric tower was borrowed from Common Lisp. The poin

Dude, you completely missed the point of that post. It literally says in the second sentence that Scheme's numeric tower was borrowed from Common Lisp. The point is that if Scheme's numbers were like the rest of Scheme, they would be horribly impractical.