Alexander Mattick suspects world models will face limitations analogous to those of optimization-based control, although they may solve enough easy tasks to suffice for many applications.

“Because if it hasn't have this specific form, it doesn't fit into like a uh linear programme or whatever. And suddenly basically the the opinion starts to dim, the more you use it. And I have a feeling that the same thing is gonna be true for like the the world models. I think there's going to be a lot of like really really easy things like the low-hanging fruit which would are just going to be like grasped, and it might be that for many tasks this low-hanging fruit actually is already enough.”