Ah…a good topic.
Around the time of Terminator 2, I started getting interested in the time travel theme. I even went on to start a short story that involved an idea of mine (which I’ll explain), which has evolved recently into two short stories that I might actually go on to submit somewhere. Anyway, this idea is that to balance the time travel load, for as many people that travel to one point in time, just as many people have to travel from that point to the original travelers time period (get it?). So, in the example of T2, with two “people” travelling back, I was making a short story about two humans that went to the time of Skynet, and getting involved with the human resistance. I liked this idea quite a bit…
Anyway, this is a huge topic. Like you said, there a proponents that a possibility of shaping current time or the future is possible in the past. Then there are others that the “butterfly effect” would be incurred in that every little thing you did would have drastic effects in the future. Or that it’s impossible to change anything.
One idea I’ve entertained is that it’s all possible and not possible. Hard to explain… if you think about time as a line, then you are limited to the cause & effect type situation. However, if you consider what time travelling would do… in the sense that we imagine it, then someone travelling from the future to the past can do and can’t do anything because he/she has already done it, but hasn’t… get it? That the future has incorporated the past and present AND future, same for the past…and there really isn’t a thing such as NOW, because it has already came and went…etc., etc. Maybe someone has gone on this already, but I love making myself loopy thinking about this, yet it’s so hard to convey.
Watch 12 Monkeys to kind of catch my drift. The beginning and the end are tied…it’s more like a circle. And while he thinks he’s travelling back to do things (there’s also some hints that it all might be his imagination) and seems to have an effect, nothing matters in the end - it still happens. In that way, you could consider it “set in stone,” but if you think about it differently, it’s not so set…but it is…
Anyway, I like this topic.
Also, the werewolf thing. It’s supposed to be a FULL moon, not just the moon. And by full moon we mean the moon relative to the Earth & Sun, so…I don’t think it can be determined.