&gt; crank<p>Using labels and insults should almost always be avoided.  Attack a person&#x27;s arguments, not their personality.  I&#x27;m sure you&#x27;ve heard it before, but this is called &quot;ad hominem&quot;.<p>Personal attacks and labels are a cheap and easy way to associate your target with a social stigma, immediately biasing others&#x27; opinions, whether deserved or not.   &quot;crank&quot; isn&#x27;t much better than &quot;conspiracy theorist&quot;  or &quot;libtard&quot; or &quot;moron&quot;.