The military wants to build a bullshit detector for social science studies

How do you know if a finding in social science is, well, real? Students of science are taught not to take the results of a single study as the absolute truth. The rule of thumb is to seek out systematic reviews, or meta-analyses, which pull together lots of studies looking at the same question and weigh their rigor to come to a more fully supported conclusion. But can we trust all this meta-science? Positive, confirmatory findings often make their way into the published literature, while negative findings collect dust in file drawers.