Observability Explained
## Definition of Observability While the literal meaning of Observability is the ability to observe (observe, ability), the root of the term originates from [control theory](https://en.wikipedia.org/wiki/Control_theory), a branch of engineering and mathematics that deals with the behavior of dynamic systems with inputs. In control theory, a system is considered observable if the current state of the system can be determined in finite time using only the output.