most scientists think that einstein's theories of special and general relativity work very well, and they use those ideas and formulas in their own work. einstein disagreed that phenomena in quantum mechanics can happen out of pure chance. he believed that all natural phenomena have explanations that do not include pure chance. he spent much of his later life trying to find a "unified field theory" that would include his general relativity theory, maxwell's theory of electromagnetism, and perhaps a better quantum theory. most scientists do not think that he succeeded in that attempt.