As to death being at a set time, to a certain extent Buddhism says, yes, it is kind of pre-determined, but they are not going to tell you when. It is almost like when you think about it, if you have big tray of water, maybe you did this as a science experiment at high school. You have this big tray of water about one inch deep, maybe it is a meter long, half a meter wide. And you take two rocks. At one end of the tray and at the other end you drop the rocks. They create waves and the waves hit each other and they bounce off the wall and they hit each other some more and so on. Now, a scientist can weigh the rocks, measure the height that they are dropped from, measure the water, measure this and that, and they can then tell you that if you drop the rocks at the same time, exactly where the waves are going to hit in the tray. Before it happens the scientists can mark everywhere they are going to hit, it is that complex. But that is mathematics for you, right? To a certain extent Kamma has a lot like that happening, certain things have already been created, I should say the conditions for something to happen have already been created. The rocks has been dropped, where the ripples hit the wall or where they hit another ripple, I don't know but it is already predestined. That is a theoretical point of view, you won't find that explained like this in any scriptures that I have read, but that is how I understand it.