Richard Feynman, a physicist, claimed in the 1970s that computers could imitate physics. He was the first to discover nanotechnology, which involves manipulating individual atoms and molecules to create complex atomic structures. Quantum nanotechnology is the term for the technology used to control individual states. However, Eric Drexler delivered the first course on nanotechnology in 1988; he hypothesized the concept of nanoscale, whereas Drexler and Merkle created a molecular machine technique for computing the energy and structure of static systems with no direct knowledge on their dynamics.