"If someone doesn't keep up with currently relevant technology, they will find themselves without the job skills that employers are looking for, regardless of w

"If someone doesn't keep up with currently relevant technology, they will find themselves without the job skills that employers are looking for, regardless of whatever other qualities they may have. This isn't ageism." Except.... I do see younger people getting hired who don't necessarily keep up with current technology. It may just be that they're ultimately cheaper, and it's just financial. But I do suspect that older devs are held to a higher standard on this front ("what? you're still using Rails 3? luddite!") It's not necessarily rational unless the company holds all candidates to the same standards ("current with technology", for example).