"The acid test of a scientific claim, I explained, is prediction and falsification. My friends at the nasa Jet Propulsion Laboratory, for example, tell me they use both Newtonian mechanics and Einstein's relativity theory in computing highly accurate spacecraft trajectories to the planets. If Newton and Einstein are wrong, I inquired of EU proponent Wallace Thornhill, can you generate spacecraft flight paths that are more accurate than those based on gravitational theory? No, he replied. GPS satellites in orbit around Earth are also dependent on relativity theory, so I asked the conference host David Talbott if EU theory offers anything like the practical applications that theoretical physics has given us. No." -- https://www.scientificamerican.com/article/the-difference-between-science-and-pseudoscience/