Albert Einstein was often mistaken. Not once, not twice, but countless times. He had both minor errors and obvious, blatant mistakes. Bugs have penetrated into all aspects of his activities: he was wrong about the fact that black holes do not exist, that the universe is stationary, wrong for atoms, etc. But many of his errors can be called useful and necessary for the development of modern physics. As the theoretical physicist Fred Goldhaber from new York state University said. "Many scientists would give anything to make one of Einstein's mistakes."