Force A Grand Unified Theory that allows for the combination of the electroweak interaction with the strong force is held out as a possibility with candidate theories such as supersymmetry proposed to accommodate some of the outstanding unsolved problems in physics. Physicists are still attempting to develop self-consistent unification models that would combine all four fundamental interactions into a theory of everything. Einstein tried and failed at this endeavor, but currently the most popular approach to answering this question is string theory. What we now call gravity was not identified as a universal force until the work of Isaac Newton. Before
Unified Theory (band) only. "Unified Theory" went on to sell over 16,000 albums by 2002. "California" and "Wither" were both released as singles. However, with the exception of Seattle, most major market radio stations avoided playing "California." Critically, the album received generally positive reviews. Reviewing for Allmusic, Greg Prato stated that "Unified Theory's self-titled debut shows that Shinn has brought a more modern rock sound to the proceedings, mixing Jeff Buckley and Radiohead with Smith and Thorn's retro rock stylings" and that the "12-track debut is a refreshing break from the norm." Lina Lecaro, of the "Los Angeles Times", describes the album as