I've been following Smolins work for many years.....the instrumentation to verify that LQG is correct or not was put in place 2007 and we recieved the first prelimary data and answers 2009......the data does not support the predictions of LQG....i.e. the speed of various frequencies of EMRadiation arriving on Earth from the same source were shown to be traveling at same speeds....
If LQG is correct then the theorys prediction was that the shorter frquencies would arrive to Earth latter that the longer wave frequencies, because the shorter frequencies would be interfering with gravitational spacetime......
I haven't seen any more recent info for that data since 2009, however, it is my guess, that if the predictions of LQG were proven to be true, we would have known then or in the future.....it would be really BIG NEWS....imho
Smolin predicted---in 2000 or 2003(?) or so--- that humans would quantify gravity within 15 yrs using geometry.....so his prediction would be around 2015 - 2020 or so......I was then and still doubtful now of our abiities of quantifying gravity that soon, if ever. I dunno.
Quantizing gravity is something that will never happen...imho Rybo
Rybo


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