Renormalization Group flows and the c-theorem

In this talk, I'll describe the ideas behind the "Renormalization Group," which is a useful way of thinking about physics at different length/energy scales. This notion has applications to many different fields in physics, such as condensed matter, high energy, and biophysics. I will also discuss the idea of a "c-theorem," which is a statement of how the degrees of freedom of a particular theory appear different at different scales. No prerequisites of any kind are assumed.