Section 7 Lecture 189 - It's going fine but

First of all, this is an awesome course. I have learned so many great things about 3D modeling, uv mapping and the modular workflow. However, I noticed that so far we haven’t touch on polygon count and optimization. Now I haven’t finish the course, so this topics might be explained later on. I’d like to know about optimization because I heard that it is really important when it comes to game engines.