The science to understand and map the human brain has come quite far, but we have yet to make a functional mathematical model where one can input a bunch of number and then compute what a human person is thinking. People have theorized and written novel about the idea of uploading the human mind into the computer for several decades now, but we are unlikely to even reached 1% of the road to get there. Among technology philosophers it is still highly debated if we will ever get there.

Right now it is impossible to accurate describe the human brain in the form of math. What we can do is write simplified models that either describe or mimics behavior for which, if we apply abstractions, we can call predictive models. Their effectiveness are quite poor but that has never stopped people from trying to use poor predictions models to predict the future.