Open access 2013: A year of gaining momentum | Absolutely Maybe, Scientific American Blog Network

"Was this the year open access for science reached critical mass? One hypothesis suggests that a transformative group needs to reach one-third to be prominent and persisting. Rogers’ theory on the diffusion of innovations that will eventually reach saturation level says the first 2.5% are innovators. By the time you get to 16% the phase of early adopters could be ending ..."