In particular, I would like to have a simple definition of environment"environment" and state"state".what What are the differences between those two concepts? Also, I would like to know how the concept of model relates to the other two.
There is a similar question What is the difference between an observation and a state in reinforcement learning? ButWhat is the difference between an observation and a state in reinforcement learning?, but it is not exactly what I was looking for. Thank you.