Now, sitting at the desk, it's time to concentrate and focus 100% of your energy on building your game, without any distraction, in the perfect environment for working productively,
All of the sudden, the roommate storms in the room without notice, back from a GDC, entering your peaceful environment without notice, and bringing à group of friends along.
He also brought along you guess what, the perfect distraction and killer of productivity: a new game or movie? of course not, worst than that, a bag full of weed.