In the next twenty years an equally great change will occur as we begin to communicate with machines by speech. Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel in a straight line. Eventually mankind will solve the problem of consciousness by deciding that we are not conscious after all, nor ever were. In the long run, our large-scale computations must inevitably be carried out in parallel. Nobody really knows how to program parallel computers.
Nobody really knows how the brain works.
In the next century, revolutionary developments will occur in both areas. Advanced technological civilizations can last a few hundreds or maybe thousands of years, but not millions. However, as computing becomes ever more intelligent and more distributed in the upcoming century, determinism in any practical sense will fade away. No fully intelligent system can be expected to give you the same answer twice in a row. If the state space is huge, the only reasonable way to explore it is at random.