And trip others up with …

… Edward Feser: Fallacies physicists fall for. (Hat tip, Dave Lull.)

Scientism is simply not a coherent position.  You cannot avoid having distinctively philosophical and extra-scientific theoretical commitments, because the very attempt to do so entails having distinctively philosophical and extra-scientific theoretical commitments.  And if you think that these commitments are rationally justifiable ones – and of course, anyone beholden to scientism thinks his view is paradigmatically rational – then you are implicitly admitting that there can be such a thing as a rationally justifiable thesis which is not a scientific thesis.  Which is, of course, what scientism denies.  Thus scientism is unavoidably self-defeating.