&gt; All of social science is sketchy... We could not verify the source, but people are going to believe it&#x27;s true because it was in the Economist.<p>It seems like your real beef here is with <i>journalism</i> (even the higher-than-average quality journalism that normally appears in the Economist). The fact that some news magazine doesn&#x27;t include citations for claims in an article[1] has nothing to do with the sketchiness (or non-sketchiness) of &quot;social science.&quot;<p>It is too bad though that the Economist doesn&#x27;t provide citations for claims like this. Did they pull &quot;10%&quot; out of thin air? Are 10% of new medical doctorates currently earned by Muslims? Did they include all kinds of doctorates (PhD, etc) in the calculation? A simple link to the source for this number would clear that all up...<p>[1] <a href="http:&#x2F;&#x2F;www.economist.com&#x2F;news&#x2F;united-states&#x2F;21679823-despite-attack-san-bernardino-americas-defences-against-jihadism-are-high" rel="nofollow">http:&#x2F;&#x2F;www.economist.com&#x2F;news&#x2F;united-states&#x2F;21679823-despite...</a>