>If you want to play with morphs worlds today, besides what's in Self, I think Squeak has seen a lot of activity. In any case, it's also worth at least reading

>If you want to play with morphs worlds today, besides what's in Self, I think Squeak has seen a lot of activity. In any case, it's also worth at least reading some of the seminal research papers around Self. I think Pharo, as a fork of Squeak, has that as well. There's even a MOOC at https://mooc.pharo.org/ https://mooc.pharo.org/