the state whereas individual points in that rectangle are in some sense the full state of the world which are probably never observed will never really talk about because we don't care about all the details we'll talk about a and B but in terms of how it's all set up that's an easy way to think of it then when you use these actions you can come to new conclusions I mean that that's kind of how math works you posit some actions in the you do some derivations and you have a new thing that's useful to use so for example