OOP to me means only messaging, local retention and protection and
hiding of state-process, and extreme late-binding of all things. It
can be done in Smalltalk and in LISP. There are possibly other
systems in which this is possible, but I’m not aware of them.
“source”:http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht23Ht/doc_kay_oop_en
