God, I didn't watch a single trailer or piece of marketing for season 1. Had no idea what it was until I started seeing it blow up everywhere. Decided to check it out and I remember being intrigued by the opening scene, trying to figure out what the concept even was. When it was revealed what 'Severance' is, I was almost mad at myself for not having thought of that before. It's a perfect sci-fi concept, simple, easy to understand, but with pretty enormous implications.