Which is why I question the "OO means it has a vtable" stance that seemed the promulgated here. While "packets and opcodes" is a bit non-specific, it does not appear to be incompatible with OO, and, for example, Smalltalk-72 seems very similar to "packets and opcodes"...though, again, it's not really specific enough to say with any certainty.
https://www.youtube.com/watch?t=653&v=oKg1hTOQXoY
Which is why I question the "OO means it has a vtable" stance that seemed the promulgated here. While "packets and opcodes" is a bit non-specific, it does not appear to be incompatible with OO, and, for example, Smalltalk-72 seems very similar to "packets and opcodes"...though, again, it's not really specific enough to say with any certainty.