I'd say it's less to do with kindness and more along the lines of a VC who invests in a hand full of startups. If you train a certain amount of beginners, you'l

I'd say it's less to do with kindness and more along the lines of a VC who invests in a hand full of startups. If you train a certain amount of beginners, you'll likely turn out a few high value engineers. A few really strong engineers could produce sufficient business value that they offset the 'loss' for the ones that don't really make the cut.