HgTX:
Your points are well-taken.
However, I was approaching the issue of age from the angle of using it as one of the intangibles to consider in order to be fair to the applicant / candidate, not as a factor to be considered in an age-discriminatory way. Also, if the information isn't offered, I don't ask for it; neither do I "round file" the resume. Still, for example, where I work, the baseline annual salary that sets the industry norms is, by and large, a straight line funcion of the number of years since graduating with an undergraduate degree. On that basis alone, age becomes relevant. It also cascades into ripple effects through the organization after hiring: if the person is paid what is perceived to be too low relative to age, it sends one bad message, whereas if the person is paid too high, it sends another. These kinds of messages can become the hushed topics of coffee-station banter that ultimately spell the demise of morale, etc., much like an untreated malignancy.
My only point is that, at least in engineering, compensation should "respect" (as opposed to "punish") age and its corresponding experience. I think the vast majority of professionals among us have made advancements and reached achievements throughout our careers.
I have no problem with rewarding young "star performers" with "star pay" or with letting the specific requirements of the job set the compensation rate, leaving age irrelevant. But, say if the job involves in-service field inspection of all of the bubble caps at every tray in twelve amine contactors, I might consider it unfair to ask a sixty-year-old to do it if there is a thirty-year-old available applying for the same job. It might be more appropriate to hire them both and have the sixty-year-old tell the thirty-year-old what to look for during his climb.
I do not at all support discrimination on the basis of age, unless age can reasonably be expected to be a factor to consider in relation to the job. However, neither do I support an applicant's hiding it just because it's "nobody's business".
Regards,
SNORGY.