>> “Wait—I love state and data mu­ta­tion. Why would you take >them away?” Be­cause they’re false friends. >CL is NOT particularily functional. Just because we

>> “Wait—I love state and data mu­ta­tion. Why would you take >them away?” Be­cause they’re false friends. >CL is NOT particularily functional. Just because we know how >to write good side-effect free code, doesn't mean its a >functional language. He didn't claim that CL or even Lips were pure functional though: "Yes, I know that other lan­guages of­fer func­tional-pro­gram­ming fea­tures, and that Lisps aren’t con­sid­ered pure func­tional lan­guages."