Overview:Welcome to Crash Course Theater with Mike Rugnetta! In this, our inaugural week, we're going to ask the two classic questions about theater. 1.What is theater? And 2. Is it spelled -re or -er? Well, there's a clue to question two in the title of the video. The first question is a little trickier. We'll look at some of the historical definitions of theater, and investigate some of the ways people have thought about theater in different times and places in the world.