Here is a talk Uncle Bob gave in 2011 at Ruby Midwest 2011. Honestly, I come back to this talk every two months or so. I must also add that I’m a great fan of Uncle Bob (@unclebobmartin). It also contains some notes about MVC - what the true purpose of MVC is, why it was created and so on. Here it is (you need to click on Read more to load the embedded YouTube video):