I disagree. In physics, you choose the simplest model that works for a particular purpose. If it is enough to assume that there are three phases, then that’s the simplest model that works, and therefore the “correct” one to use. A model that has four phases is, then, bloated.
I disagree. In physics, you choose the simplest model that works for a particular purpose. If it is enough to assume that there are three phases, then that’s the simplest model that works, and therefore the “correct” one to use. A model that has four phases is, then, bloated.