Well then this ought to push it right over the edge: http://news.discovery.com/space/space-bursts-insight-to-theory-of-everything-121209.html Violating symmetry Superstring theory scientists predict that if particles and anti-particles (antimatter is an opposite form of normal matter) traded places and time was reversed, the world would still look the same. If any evidence is uncovered that matter and antimatter actually act differently, or violate their apparent symmetry, it could offer support for superstring theory. "If it were proven to be violated by any physical process, even at some tiny level, then this would radically change the direction of current theoretical approaches to constructing a unified model of all the forces of nature," Fox said. Collecting observational evidence can prove challenging, as many quantum structures are too small to probe with present-day technology on Earth, making a space-based probe a necessity. Photons streaming from gamma-ray bursts have thus far shown no changes in the rotation of their polarity. Such a rotation would indicate a lack of symmetry if time were reversed and particles and anti-particles switched. Studying three gamma-ray bursts with significantly more precision than ever before, Toma and his team found no change in the polarization of the photons, implying that the symmetry is consistent to at least one part in 10 million. This is a new record in constraining the rules that govern nature, and will influence attempts to create a unified theory.