Perma… nence?

Ken Levine on the “1999 mode” in Bioshock Infinite:

So recently I talked at my old college and feeling like Mr Successful, then this guy says “I’ve got a bone to pick with you, Levine!” He’s giving me a hard time, he says “the problem was none of the decisions I made had any permanence to them. I didn’t have to commit to any decisions.” And I was like “oh!” The clouds parted for me. Except for the Little Sisters, there’s no permanence in your choices. It hadn’t really crystallised for me before, the difference between games we had made before, like System Shock 2, and BioShock.