It is, but it's the same disaster of bugs we already have from multiple independent cores sharing the same memory space, not a brand new disaster or anything.

It is, but it's the same disaster of bugs we already have from multiple independent cores sharing the same memory space, not a brand new disaster or anything. It's a disaster of latency issues too, but it's not like that's surprising anyone either, and we already have NUMA on some multi-core systems which is the same problem. We have existing tools that can be extended in straightforward ways to deal with these issues. And it's not like there's a silver bullet here; having separate address spaces everywhere comes with its own disaster of issues. Pick your poison.