I call it inexact because you can't use the classical way of proving theories right or wrong. There's no mathematical calculations you can do to figure out all the implications of that theory. The theories are based on observations of human behavior and they most likely do not cover all edge cases they are however the best we got at the moment in describing human behavior and motivations.
If this were to happen in physics we'd call it it a failed or incomplete theory.
> I call it inexact because you can't use the classical way of proving theories right or wrong.
If you cannot clearly and empirically prove a theory wrong (in principle), it is not science. Falsifiability is required for science and scientific theories. This doesn't mean all scientific theories are false, it means all scientific theories must not fail a comparison with reality.
Quote: "The strength of a scientific theory is related to the diversity of phenomena it can explain, which is measured by its ability to make falsifiable predictions with respect to those phenomena."
On that basis, psychology is not a science.
> If this were to happen in physics we'd call it it a failed or incomplete theory.
If this were to happen in physics, people would abandon it, as they abandoned astrology and alchemy.
