Comment by DaveGriffith on The Graviton as Aether · 2010-03-04T22:57:33.424Z · LW · GW

Loop quantum gravity actually does have at least one testable conclusion: non-constancy the speed of light at high energies. There's even some support for this as of a couple of weeks ago, with measurements from the Fermi telescope.

Comment by DaveGriffith on "Put It To The Test" · 2010-02-09T01:48:58.313Z · LW · GW

Another alternative reading is "can theoretically be checked". Obviously, this is strictly weaker, but still covers a large number of logical failures (e.g. creationism).