>> Yeah, yeah. If our algorithms actually did. >> Yeah. So, that's what I'm saying is that, you have to think about what your algorithm would have done in all these other situations that didn't come up as player two, yeah. >> Okay. >> Okay. So, that's Reach subgame solving. Yeah, so the idea is for off path actions, we have to consider how we would have applied subgame solving and all these other situations that didn't come up. We have a solution for it, which is basically to split that what we call slack among the different subgames.