If we start using robots and 3D printers to make all of our goods, will we lose those jobs and never see them replaced?
Not everyone thinks so.
In early human civilization, everyone was a hunter or a farmer. But as those jobs became more efficient, people were able to specialize and create new jobs.
Those jobs might go away and might create a tough period for a lot of people, but many economic thinkers believe it will create new and better jobs in the long run.
Watch this thorough but short investigation of the issue and decide for yourself.