I came across this video one day researching about entropy and time. I learned about this concept last year in my Physics class, but I still struggled to deeply understand it. Everyone who talks about entropy explains it as, "The number of ways you can rearrange something and have it look the same and still not notice." While this is a great definition to remember, what does it actually mean?
In this video, Sean Carroll claims that the difference between the past and future is because entropy is increasing. This is also known as the arrow of time. This is the fact of remembering the past, but not the future. This is the fact that we are all born, we all live, and then we all die. Then Carroll talked about something that I had never thought of before, and really grabbed my interest. He says we all know that the universe started with low entropy but no one ever asks "Why?" Richard Feynman answers this 50 years ago and claims we cannot completely understand the arrow of time until the mysteries from the beginning of the universe are reduced.
I think Feynman is trying to say that we cannot answer questions now until we answer questions from the past, which I think makes since when you connect it to entropy. For example, how can we play a sport if we haven't learned the rules? Or how can we bake a cake when we don't know the ingredients? To me, Feynman is saying if we answer the question that started it all, then we will be able to answer the questions that branch off from this topic.
In conclusion, I really enjoyed watching this video. It really sparked my interest and gave me new concepts to think about. Ever since I was young I've always question time and so I'm always interested in watching videos that explain time and give me a deeper understanding of it.