Since superfluid light exists in computers I think frankly we may already solve the theory of everything because the missing piece is infinity in all things which solves all future problems. [...] "There are many attempts to quantize gravity-string theory and loop quantum gravity are alternative approaches that can both claim to have gone a good leg forward," says Stefano Liberati, a physicist at the International School for Advanced Studies (SISSA) in Trieste, Italy.
Read the article here.