How is that different from working with a n00b except that it only took 30sec to get to the next bug rather than a week?

The junior engineer will grow into a senior engineer

> The junior engineer will grow into a senior engineer

And then quit after accepting a new job that pays them their modified value, because tech companies are particularly bad at proactive retention.

	▲	Kirth 10 minutes ago \| parent [-]
		.. and because the job and environment weren't that pleasant or rewarding to offset that delta in income offered elsewhere at an equally drab employer

And then they get their own junior engineers and you get fresh new junior engineers.