Now add another layer at right angles, and you have a grid. Stan Williams of Hewlett-Packard took over from there. The HP effort is only about five years old, and has already produced impressive results. We have at least 50 more years of Moore's law at affordable costs. At the end of that time, we will have reached the complexity of human brains.
Cultural diversity is absolutely necessary.
People from different scientific disciplines don't understand each other. Bring them together and at first you have tribal warfare. Breakthroughs happen when the synthetic organic chemist and the solid state physicist actually begin to talk to each other with understanding. Now add the computer scientist and the biologist, and you're getting somewhere. Molecules just want to switch.