As he says, Squeak already runs on bare metal, so why have a version with Oberon below? He himself admits in the talk that a system as he proposes would have tw

As he says, Squeak already runs on bare metal, so why have a version with Oberon below? He himself admits in the talk that a system as he proposes would have two languages rather than one (i.e., go against the spirit of SmallTalk systems and LISP machines that he praises earlier in his task). There are Smalltalk ports on top of LuaJIT and Oberon ports on top of LuaJUT, so there is at least one reality where the two languages sit side-by-side (rather than on top of each other as the talk proposes); see Michael Engel's talk on Vimeo for more details.