Arguably replacing these jobs with machines is also too fast for any kind of proper transition. You can say "Move elsewhere then!" but as some have already pointed out, this is not always so simple. And, say that the machine revolution does happen world over, where exactly can you find jobs that match your skillsets? Don't forget the many others who will also try the same.
Absolutely, education and a social security net will help with the transition. But in reality, these two are often not an option for many people, and I doubt that the government can supply them in the same speed as the change itself. I fear that we'll have massive social unrest in the near future.