I'm going to ramble a lot here, so don't be afraid to call me stupid. Also, I have a hard time explaining this, but I'll do my best.
So, I believe that destiny can be proven by the fact that everything depends on the first initial event that created the universe (Big Bang, God, or whatever).
For example, let's say you kick a ball and it smashes a vase. Since that first initial event (kicking the ball), due to the strenght that you used to kick it and the way you did it, it was destined to hit that vase, and that's it. It is what it is.
Now, thinking bigger. Assuming the Big Bang is true (which doesn't necessarily has to be), didn't its initial event (the cosmic explosion) shaped it all? It made all matter be arranged the way it is now. Even my brain, which makes up for my consciousness, is just matter. The matter that composes my brain, the world and everything else in the universe, is arranged the way it is now because of that first cosmic explosion that created the universe.
If I'm not just being stupid and this actually makes sense, even though we are more complex beings. Sense of control or choice is an illusion. You make your choices based on the person you are, but how can you have control over your choices if you don't have control over all the other things that made you turn you into the person you are now?
Small example, let's say your parents teached you to like Rock 'n' Roll when you were a kid. You grew up and one day, you chose to go to some rock band's concert. Now, while this is, technically, your choice, you only made it because your parents teached you to like rock.
Thinking bigger, again. Your parents' consciousness are created by their brain, which are composed by matter, which are arranged the way they are because of the cosmic explosion, just like that vase broke because you kicked that ball.
Also, wouldn't that mean that, while i don't think humans would be capable of this, it is possible to predict the future? If we know how much force we kick something, and where we kick it, we can know exactly where it's going to go. Whatever object is, it's just matter. Just like our brain. So, while, of course, it's completely different, maybe we could predict people's actions, if we understood the way the matter that composes that person's brain is arranged and how they change.
