quantum gravity is currently the big problem interest in string approach to quantum gravity has been declining lately (it doesnt have to be permanent, might pick up! but dwindling for the time being) and interest in Loll gravity approach has been growing (though still only a few papers come out each year. see "Quantum Grafitti" thread for current news) so why is it a good idea to take a look at Loll gravity? Because quantum gravity is the big problem and interest in Loll approach has been growing. terminology: it should be called "Ambjorn-Loll" because the first papers were in 1998 by Jan Ambjorn and Renate Loll. Or it should be called "nonperturbative path integral approach to quantum gravity by the method of Causal Dynamical Triangulations", or CDT, but I find it simpler to say Loll gravity. Loll is one syllable.