Symmetry of everything?

Writing in today's Telegraph Oxford mathematician Marcus du Sautoy deflates the hype surrounding latest media wunderkind Garrett Lisi. It had been widely reported that unemployed surfing physicist Lisi had 'done an Einstein' and, working outside the physics establishment, come up with a 'theory of everything'. Sound too good a story to be true? According to Marcus it is; the theory falls down where Lisi attempts to combine the symmetries of quantum physics and relativity. Marcus's conclusion: they just don't fit.