In order to communicate successfully, we need to refer to overlapping systems, and the world we see in this way is a compatible world. But we cannot have the same experience with all people, so the exact same reference system is not possible. The ones that best support the above reasoning are:. ['Identical reference systems must be compatible.', 'Identical reference systems must rely on the same experience.', 'Different experiences create an incompatible world.', 'Successful communication is impossible.']