https://www.twosixlabs.com/translating-between-brain-and-world-decoding-biological-neural-nets-with-artificial-neural-nets/

The technology for simulating biological brains using Neural Networks exists. And it's extremely simple - the model mentioned in the article accurately predicts a mouse's future movements with just a simple DNN. Soon enough this technology will be able to simulate human brains and free will is disproven. Our brains and consciousness, it's all just a bunch of weights and biases anyways.