Although PERSON@1 's theory has been superseded , most modern non-relativistic gravitational calculations are still made using PERSON@1 's theory because it is a much simpler theory to work with than General Relativity , and gives sufficiently accurate results for most applications .

PERSON@1 's theory is still commonly used for many things because it is much more simple to work with than the theory of General Relativity and is usually accurate enough for many uses .
