The influence of telling people their futures...

RUINS THEIR FUTURE.

Listen. 99.9% of the time in any movie, when you tell someone their future, what do they do? They either try their very hardest to avoid it, or they try to further themselves to their goal, right? Now, let me tell these people why they're stupid: YOU CANNOT CHANGE YOUR FUTURE! If you have some magical being telling you that you're going to die at midnight tomorrow, you have two options. You can either sit in your house and do what you normally do, pretending you never heard the news, but then you choke on your potato chips and die in your underwear while watching reruns of The Office. Your other option is actively avoiding dying at midnight through being overly careful and locking yourself in your room, but then you die of a heart attack (You should really stop eating potato chips. They give you high blood pressure.) because no one was able to get into your room due to you locking the door, which you could have avoided if you'd never heard the news. No matter what you do, if your fate says that something will happen, it's going to happen.

I feel like this was how it was in the case of Shakespeare's Macbeth. Would Macbeth have actually become a king if he'd never been told? Honestly, I doubt it. The witches were likely just pulling a prank on him - it was a sick, twisted joke, and they knew the outcome. Macbeth could have lived his life happily while being the thane and a trusted warrior serving under Duncan, then eventually would have maybe become the king naturally, but instead, he followed the word of some random chicks and killed his own chance at a happy life. He should have just been like Banquo, playing it cool and allowing his life to come to him. After all, it's his fate, right? If he chose to do nothing, he would have still become king if being king was his fate, because in that alternate universe in which he did nothing, he'd have somehow gotten the position as well. The point is, DON'T TRY AND CHANGE YOUR FATE. You can't run from it, even if you already know what's going to happen. 'Nuff said.