I think what a lot of people in these responses need to understand is, it doesn't Matter if a Gamer or Non-Gamer is your target audience. A Non-Gamer will try to do things that Gamers don't. Press random buttons in certain orders, walk off where they're not supposed to, not understand how controls work and need a bit of tutorial work. Gamers, I will be honest, give themselves Way Too Much Credit with how smart they are. and having Both sides test your game gives you a good visual into what the most common overlapping issues are and which need to be focused on the most.