Grain Alcohol Physicists: "The Black Hole War - My Battle with Stephen Hawking to Make the World Safe for Quantum Mechanics" by Leonard Susskind
Mr. Leonard is head-over-heals enamoured of his views on string theory of being the underlying basis to a some greater reality and cannot in anyway be wrong. Einstein felt that way too, but there is a vast difference between Mr. Leonard and Einstein; most of Einstein's work could be for the most part tested in short order. The only detail left was gravitational waves which took instruments 100 years of development before being ready to capture their existence. With string theory the time scale before technology is advanced enough to test could be greater than the life of the universe. And of course if SUSY is not found at the LHC then string theory is so mathematically flexible that you can just claim "not enough energy". Maybe that is what Penrose is pissed at. The math puts forth unproven models as for example extra dimensions. No one sees this as puzzling but there is a huge chasm and string theorists fail to see it. Extra dimensions require faith. No way around it. The same faith one has in believing in a standard religion (I am all for religion). Religion transcends the physical but so do extra dimensions. They assume a fourth or fifth spatial dimension is as real as 3 dimensions without a physical way of seeing, feeling, testing or even imagining it. How is that for faith?
If you're into shitty arguments regarding Black Holes, read on.