1 answer · asked November 13, 2017 1:48am · Lesson: Adding Bevels pt. I · Course: Modeling Weapons for a First Person Shooter
Hey Matt, I go over that in more detail here: https://cgcookie.com/lesson/high-poly-topology-and-shading
In short, it makes for more accurate shading when baking and makes the modelling process for hard surface game assets a little easier.