The CEO of a Danish IT company just posted a heretical article (in Danish) where he stated that he preferred younger employees, because they were more productive and more open to new ideas.
Naturally, older IT guys immediately started flaming him. Interestingly, they exactly proved his point: Many older employees are set in their ways and refuse to consider that other viewpoints might be as valid as theirs.
Especially in a fast-moving field like IT, dogmatism is deadly. If you are a not-quite-young IT person, think about whether you are falling into the trap of believing that your experience trumps every new idea that younger colleagues come up with.