
Well said, and applicable to life in general
A little humility goes a long way, as does an open mind: I've spent literally months trying to get a network admin to understand that my telling them their network has a problem is not a personal attack on their ability, experience, knowledge, masculinity or position in the societal pecking order, but a simple application of my own ability and experience and most of the time I don't even crow about it when I prove them wrong, because I've been there myself, heading down completely the wrong path and becoming blinkered to other options.
Of course, these comments will now fill up with people who do in fact know everything and will not be shaken from that belief (if you wish to see a caged self-selecting sample group, check out the comments pages on the "Reg guide to Linux" series, but be warned, it's not pretty).