"Science runs on the premise that experiments, and all the uncertainty involved in them, should be open for scrutiny." Editorial: Politics versus reality, Nature 434, 257 (17 March 2005) †
When there are claims made about anything, in any domain, by anyone, bring evidence that either matches a principle or if it doesn't match the principle, have a rational explanation as to why that evidence does match. Root Cause Analysis required for both matching and not matching.
† http://weirdtech.com/sci/expe.html