I just think it is not totally random. I think there are modifiers to the "randomness" if that makes sense? Every exotic item or bounty is not equal to being awarded 100% randomly at a particular time or place (or other variables). There must be a set of algorithms at work behind the scenes that change some outcomes. But yes, you could most definitely be right. It could be 100% random with no "if then statements", and I have happened to receive an incredibly rare incident of receiving the same bounty 12 times. And the same weapon xur has sold each week.