Real functions phone home

All the functions we worked with so far weren't really functions - they were procedures. To be called a function, technically you must return a value to whoever called you. In this lecture we're going to look at how do we create procedures that return things(aka functions). Moreover, we're going to take a look at a really complicated function that does a recursive action. By the end of this lecture we're going to have a dynamic animation that will change randomly.