We know that the universe doesn't permit perfect information. You have to pick if you want to know the speed of a particle or its location once you approach the

We know that the universe doesn't permit perfect information. You have to pick if you want to know the speed of a particle or its location once you approach the tiniest scales (and various other trade-offs based on the fundamental uncertainty). Thus you can't predict perfectly how a system will behave. Neuronal processes in the brain seem to be build in a way to amplify such tiniest scale difference to generate divergent outcomes from very similar sensory and memory inputs.