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24M views · 7.4K reactions | Randomness And Chaos Are Not So unpredictable! 😲🔬 | Randomness And Chaos Are Not So unpredictable! 😲🔬 | By The Action Lab | Hey Google, flip a coin. Alright. Its heads. Tells. Actually, neither of these methods of flipping a coin are random. For example, if I knew the initial linear and angular momentum of the coin and the amount of win resistance, I could calculate exactly how the coin would land every single time. There's nothing random about it. Flipping a coin is completely deterministic. The same goes for flipping a coin using a pseudo random number generator. For example, I can make a simple pseudo random coin flipping algorithm by using the digits of pie. If the digit is awe, its heads if it's even its tails. Now to someone who doesn't know the algorithm it seems like it's random with no repeating pattern whatsoever. But if you just knew that I was using the digits of pie and whether they were odd or even then you would know what was going on and everything I was going to say every single time. So the more correct term for this is actually not a random system but a chaotic system. And a chaotic system is one that appears random but simply because we don't know all the information to predict the result. Okay, so I have here something that's called a double pendulum and what a double pendulum is, is it's like a normal pendulum but instead of 1degree of freedom, it has 2° of freedom and that means that you can create an amazingly chaotic system. So, you can start it in any position and give it a spin. So, now with the dark, you can see that if we have a black light, we can make this amazing pattern on the back and we can actually show the chaotic system in action. Chaos is a thing that's determined. It's determineistic meaning that if you knew everything, everything about the initial conditions, you could predict what will happen in the future. Whereas randomness is completely unpredictable. You can never predict what will happen to a specific thing. When you drop a lot of balls, it becomes easier to predict where the average ball will land and what's interesting about this is there's no specific thing telling the balls to fall in this order but when you get a bunch of chaotic motions all working together, they end up to produce a very predictable curve. So, what it says is that the more chaotic a system is, the more predictable it actually is and that even applies to human behavior. So, even though we make individual decisions and it seems like we're making individual decisions, we're actually very predictable in what we do. In fact, scientists have found that we're 93% predictable in almost every aspect of our life. If you take a large enough population of humans, it doesn't matter age, ethnicity, gender, we're really predictable. We all do the same things and so we as humans are completely random and unpredictable yet we're very predictable and thanks for watching and I'll see you next time.
Randomness And Chaos Are Not So unpredictable! 😲🔬
