Introduction
Physics is the branch of science which studies the most fundamental laws and principles governing the world around us. However, there are common misconceptions about what lies in the purview of physics and what does not.
Most importantly, physics does not seek to answer the question of what reality is - this question is left to the philosophers. The sole purpose of physics is to formulate a description of reality which is based on observations of it and which can be used to predict its future.
These descriptions are usually called models and the only criteria we have about them is that their predictions agree with observations. However, how they reach those predictions and if reality actually functions in the way the model says is usually impossible to verify and thus irrelevant to physics. A single phenomenon may be described equally well by multiple different models and, as long as the predictions made by these models agree with observations, we consider them to be equally correct. In fact, the only reason we might prefer one model than another from two equivalent models is that it is simpler and thus easier to explain.