[kazinator]

1. Languages that have all the Lisp features are in the Lisp family. Thus languages that are not in the Lisp familly are ones that don't have all the Lisp features. Once a langauge disappears behind the event horizon of the Lisp family, outsiders no longer distinguish it from any other member of the Lisp family; it's just Lisp.

2. Having some features of Lisp is not the same thing as having those features in that form and integrated in that way.

It's not just the roster of features, but how they blend!

If two features have to speak with each other through some interpretation layer, that spoils everything.