

I’m the co-founder of string field theory, which is one of the main branches of string theory, so I have some “skin in the game”. It hasn’t been tested yet and Nobel prize winners have taken opposite points of view concerning something called string theory. Well, I think we actually have the theory but not in its final form. How close do you believe science is to accomplishing a theory of everything? His latest book, The God Equation, is a clear and accessible examination of the quest to combine Einstein’s general relativity with quantum theory to create an all-encompassing “theory of everything” about the nature of the universe.

M ichio Kaku is a professor of theoretical physics at City College, New York, a proponent of string theory but also a well-known populariser of science, with multiple TV appearances and several bestselling books behind him.
