Could there be a fifth dimension

By now we’re used to the idea that the world has four dimensions: three spatial and one temporal. But what if there were a fifth dimension — what would that dimension look like, and how would it relate to time?

One of the central threads running through the philosophy of time concerns the idea that time flows. This doesn’t sound controversial: for most people, it flows in much the same way as a river…

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Could there be a fifth dimension