Does science work by consensus? Actually, hmmm, yes, in fact, it does, as Naomi Oreskes and myself and perhaps most interestingly George Musser in Scientific American have recently asserted.
A very impressive collection of pro-consensus statements has been put together by "Logical Science" a.k.a. M.J.Sparrow a.a.k.a. Wacki, and can be viewed online here.