Common Lisp is also a dynamic language. In CL, classes can be redefined at runtime and the changes effect already instantiated instances! This is just an examp

Common Lisp is also a dynamic language. In CL, classes can be redefined at runtime and the changes effect already instantiated instances! This is just an example, not the only dynamic feature of course. Common Lisp has SBCL which generates very fast AOT native code despite the dynamic nature of the language, so I am not sure that being dynamic is a great excuse for being slow.