> It's not wrong to discriminate against women? where?
I don't think I said that in my message? I interpreted your "wrong" as "not reflecting reality" rather than "morally wrong". Also, plenty (most?) countries don't have laws against discrimination. For example, here's the list of countries that have some on Wikipedia: https://en.wikipedia.org/wiki/List_of_anti-discrimination_ac.... That's 20 countries, so a bit more than 10.25%.
> That "all things being equal" trick you keep pulling is the problem. Yeah they're so equal except you're presumimg one is a hard worker and the other one is a slacker and you can't tell from the resume or interview for some reason.
I don't think saying that younger people have more energy than older people is a "trick". This isn't about being a hard worker or not. I'm trying to explain why employers would prefer younger people. Something that get thrown around a lot here on HN is that younger people have more energy. You may disagree, but most people (and thus employers/recruiters) seems to think this way. Thus someone older switching careers has to prove themselves more than a new graduate. You can make the argument that all these people are wrong, but you're going to have to defend your position with things stronger than baseball , raw mental abilities and work ethic. If young people have no issues with doing unpaid overtime and older people do, an employer will prefer them for example.