I prefer the Treaty of Orlando, which is much more inclusive, and underlies our entire community.
http://web.media.mit.edu/~lieber/Publications/Treaty-of-Orla...
It is scary that the broad definition given in the 80s has been supplanted by a narrow “java or C++” definition today. If that what you mean by it, then no we aren’t talking about the same thing. I’ve built plenty of OO systems that don’t correspond to that definition at all, and at any rate, were still considered OO systems by the OO community (at least by the people who attend ECOOP and OOPSLA).