The Problem of Other Minds

There's no way that the taste, which is a mental thing, and the water could in any way be related to each other. How do you know what's going on in their mind? Do you directly see their mind? Of course not. But if there is no connection between mind and matter and your body is a purely material thing, then there's no way by paying attention to body I can figure out what’s going on in mind because there's no connection between them. This is called the problem of other minds. Descartes given us two different answers. He said the math tells us what's real and it's objective, but the mind touching itself in consciousness is