Why not? Apparently lush gets it right: C-like speed on numerics with a Lisp-ish syntax this guy likes. Yes, C-style stacks are going to beat Lisp-style closure

Why not? Apparently lush gets it right: C-like speed on numerics with a Lisp-ish syntax this guy likes. Yes, C-style stacks are going to beat Lisp-style closures; but there is no reason why a "fancy" language can't do fast matrix operations, which is 99.9% of numerical code anyway. Even Scheme has (rather un-Lisp-ish) vectors in addition to the standard linked lists.