It’s a fact that all studies are biased and flawed in their own unique ways. The truth usually lies somewhere in a flurry of research on the same question. This means real insights don't come by way of miraculous, one-off findings or divinely ordained eureka moments; they happen after a long, plodding process of vetting and repeating tests, and peer-to-peer discussion. The aim is to make sure findings are accurate and not the result of a quirk in one experiment or the biased crusade of a lone researcher.
http://www.vox.com/2015/3/23/8264355/research-study-hype