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? You see my point. A particle moving in ordinary space has a considerable amount of information - its position in three dimensions, its velocity in three dimensions, its angular momentum about three axes, its mass, its charge, its spin, and so on. When it interacts with another particle, also with the same information set, the two particles information sets change, they go in different directions, for example. But from the new data sets, the old information can be reassembled. Nothing is lost, all the information about the original paths and particles is maintained between the two new information sets. In a black hole, this is not true (as previously understood). A particle entering a black hole affects the mass, angular momentum and charge of the black hole, and nothing else. Information about the linear momentum of the particle, for example, is lost. It makes no difference to the black hole which direction the new entrant was travelling in; the hole ends up exactly the same irrespective. By measuring the properties on the black hole before and after the new particle enters, we could determine what the mass, charge and angular momentum of the particle was. But nothing else. For reasons beyond any understanding, physicists call this the No-Hair Theorem. This is one of those areas of physics that gets... complicated. To put it mildly. Keep a bottle of Gem Clear handy for this next bit. You'll probably need it. An electron is a single, indivisible particle. Except that you're allowed to divide it. You can split an electron into two virtual particles. A virtual particle looks and behaves just like a real one, except that it's impossible. One of the virtual particles you get is a Spinon. That's pretty much all it is, spin. That's a particle of information. If you want a better explanation, take that bottle of Gem Clear and give it to a particle physicist. You can tell by googling about Spinons that nobody talks about them sober. Is the information now non-physical? For that, google "Mathematical Realism", the theory that physics, and the physical universe, is an emergent phenomenon from mathematics. At this point, please bear in mind that most of the scientists who developed these ideas early on all went completely insane...That's one of the reasons I gave up on my Applied Math College Degree and went into Systems Engineering...
Mr. Leonard's been going on about this for years (that information cannot be destroyed). In fact, Mr. Leonard insists that information cannot be destroyed, even by a black hole, which Hawking had argued did occur, at least back in the 70s (vide "The Nature of Space and Time" by Stephen Hawking and Roger Penrose - review in the works) or something like that. Reportedly, this argument will be taken up by the Ashley Madison lawyers in response to the class action lawsuit blaming them for not really erasing former member profiles.
"We couldn't do it, the laws of physics stopped us!"
NB: His comments on Stephen Hawking's efforts are absolutely uncalled for. I won't bother looking them up, but they went on something like this (I'm paraphrasing): Hawking is a spent force. He hasn't come up with anything new in years. It is like Norma Desmond, retreating into her own world, watching old movies and dreaming of making a triumphant return. WTF! Basically, Mr. Leonard is full of shit: "My Battle with Stephen Hawking to Make the World Safe for Quantum Mechanics." Indeed.