The situation was kind of the opposite to the famous case where a physicist (Alan Sokal) published a nonsense article in the journal Social Text. This time, a sociologist called Harry Collins (from Cardiff) answered questions on gravity-wave physics and when his answers were compared to an expert's, a panel of 9 other experts couldn't distinguish between the two (7 were undecided, 2 got it the wrong way round). Collins has been studying (they seem to say studying physicists, not physics) and talking to gravity-wave physicists for over 30 years, and has gained what he calls 'interactional (rather than contributory) expertise' in the field.
SOKAL was impressed, but says that if sociologists want to go deeper and understand how science is influenced by social factors, then they really need to understand the science as well as the experts (i.e. Collins' knowledge isn't enough).
Here's a link you'll be able to follow:
http://www.cf.ac.uk/socsi/expertise