OTOH, I remember reading somewhere that Tanenbaum was happy when Linux came out so that people would stop asking him to make Minix into a real "usable" operatin

OTOH, I remember reading somewhere that Tanenbaum was happy when Linux came out so that people would stop asking him to make Minix into a real "usable" operating system. There may be something to be said for letting Lisp remain more conceptual/ideal than practical and allowing other functional languages take on the "warts" associated with being used by everybody.