>"I've been doing it for 20 years, and you say I'm wrong?" How to best handle such cases? I wish I knew. I try to limit the discussion to the purely technical,

>"I've been doing it for 20 years, and you say I'm wrong?" How to best handle such cases? I wish I knew. I try to limit the discussion to the purely technical, or to barely acknowledge it as in "sure, but RFC123 says X and Y implements it that way as shown in Z". Of course, that goes for when I'm the authority as well. I don't care who is correct, I care about what.