Lee Smolin tantalizing hint in TTWP Marcus You seem to have one of the best reads on Lee Smolin and the points he makes. I’m hoping you, or someone here, can help make sense of part of his book ‘The Trouble With Physics’. On page 217 he refers to “another tantalizing hint”, relating the very large (GR scale) with the very small (QM scale). He is dealing with Rd the distance scale and Rm the mass scale of the universe (my subscripts on R). I understand arriving at 10^60 of Planck scale for Rd (page 204). Lee then uses “just the fundamental constants of physics” to covert that to Rm. Which constants did he apply; and what is Rm? It would have been simple enough to just list them in his book! His point is Rm give the same “order of magnitude” as the mass differences between the different types of neutrinos. What is he talking about? He could have listed this as well if it is such an important comparison. I make the mass scale difference between electron and muon neutrinos as 10^5 and between muon and tau neutrinos as 10^2. Maybe he means the full range for a 10^7 scale, I cannot tell from the book. He seems about one paragraph short of making himself clear. Can you, or does anyone, have a reference that might make sense of this.