I was just reading about the probabilistic nature of the ChatGPT computer program. It uses enormous quantities of data to synthesise language, basically just taking apart millions of documents and reassembling them make new logical language. This shows how consciousness and the brain's prediction and decision making systems work - the brain isn't computing new activity to make decisions, just analysing troves of data stored in neural networks, chemical systems and DNA and applying the analysis to new situations. The difference is that our consciousness allows us to use our internal voice to "step back" and make considered judgements about possible actions, up to a point, rather than just following chains of logic the way a computer does.