Some people say nanotechnology is not achievable. But it already exists - biology is nanotechnology. The bacterial flagellar motor is a perfect example. It’s a biological nanomachine, only a few dozen nanometers across, built from precisely arranged proteins that form a rotary engine. It can spin at up to 100,000 revolutions per minute, powered by ion gradients across the bacterial membrane, just like an electric motor powered by voltage. It even has equivalents of a rotor, stator, bearing, and drive shaft, all self assembled from molecular components. With the help of AI, we’ll reach that level soon.