Massive survivorship bias here. They only interviewed engravers who haven't lost their job so of course they're not hurt by it. What about those 6 guys he didn'

Massive survivorship bias here. They only interviewed engravers who haven't lost their job so of course they're not hurt by it. What about those 6 guys he didn't need to hire because of the machine? What about businesses which shut down since the advent of machines?