Stuff like this makes me think of Ignaz Semmelweis: <a href="http://en.wikipedia.org/wiki/Contemporary_reaction_to_Ignaz_Semmelweis" rel="nofollow">http://en.wikipedia.org/wiki/Contemporary_reaction_to_Ignaz_...</a><p>Many of his contemporary obstetricians heard his criticisms of their practices, including his accusations that current obstetric practices amounted to mass murder, said, "seriously, I don’t need to hear that crap," ignored him, and went on murdering their patients by the hundreds of thousands for decades. Carl Levy published a paper on how Semmelweis's theory of infection was implausible. Semmelweis died in an asylum.<p>When you're <i>giving</i> criticism, it is of course of paramount importance to deliver it in a polite fashion, because most people will disregard the second sentence of this paragraph, and you don't want to be Semmelweis. When you're <i>receiving</i> criticism, it is of paramount importance to entirely ignore whether it is polite or not, because most people will disregard the first sentence of this paragraph, and you don't want to be Levy.<p>But if you had to be one or the other, it would be <i>much</i> better to be Semmelweis the jerk than Levy the defender of incompetence.