(1) Does "gaining traction" mean "gaining momentum"?
(2) Does "his sample" refer to "Siler's sample"?
Context:
One, perhaps radical, solution that seems to be
gaining traction is to eliminate prepublication peer review altogether. With the rise of online journals, preprint servers, and academic social networks such as ResearchGate, page space is no longer at a premium, allowing more results to be published than ever before. “I think we’d be a lot better off if we just published everything. That’s probably the direction the world is actually going,” Starbuck says.
Low acceptance rates in journals may foster exclusivity and prestige,
Siler says, but if
his sample is representative of science as a whole, journals might also be missing important research that is esoteric or unconventional. In the case of the 14 overlooked items, “what the highly prestigious journals decide doesn’t dictate the ultimate value or recognition of the article,” Starbuck notes.
More;
http://news.sciencemag.org/scientific-community/2014/12/does-journal-peer-review-miss-best-and-brightest