As sound as this advice is, one can generally infer one's age by the makeup of their CV (college graduation date, years of experience, positions held, etc). To

As sound as this advice is, one can generally infer one's age by the makeup of their CV (college graduation date, years of experience, positions held, etc). To me it doesn't matter how old someone is, but I have a pretty good idea of their age even before I've met or talked with them.