> poorly defined.
Poorly defined is not the same as undefined. There are bounds and we have a decent understanding of what this means. Not having the details all worked out is not the same. Though that lack of precision is being used to get away with more slop.
> I need to find the paper that deepmind produced
I've seen that paper and the results pretty close to the action. I've even personally talked with people that worked on that paper. It very frequently "forgets" what is outside its view and it very frequently performs non-physically consistent actions. When you evaluate those models don't just try standard things, do weird things. Like keep trying to extend the grabber arm and it shouldn't jump to other parts of the screen.
> The problem is that its not really a world model, its just image gen.
Yes, that was my point. Since you agree I'm not sure why you're disagreeing.
I don't think I'm disagreeing, just adding more colour.
> It very frequently "forgets" what is outside its view
This was the observations that I saw when we were testing it. My former lab was late to pivoting to robotics, so we were looking at the current state of play to see what machine perception stuff is out there for robotics.
Have you looked at Titan and MIRAS where they use online/updating associative memory that happens to be read out via next-token prediction?
https://research.google/blog/titans-miras-helping-ai-have-lo...
https://arxiv.org/abs/2501.00663
https://arxiv.org/pdf/2504.13173
Much research is going into these directions, but I'm more interested in mind-wandering tangents, involving both attentional control and additional mechanisms (memory retrieval, self-referential processing).
Memory in world models is interesting. But I think the main issue is that its holding everything in pixel space (its not, but it feels like that) rather than concept space. Thats why its hard for it to synthesise consistently.
However I am not qualified really to make that assertion.
Ah, thanks for the clarification. It can be hard to interpret on these forums sometimes.