I guess the big thing this hypothetical world would solve is a situation where demand exceeds current supply of trained experts. For example, during peak covid

I guess the big thing this hypothetical world would solve is a situation where demand exceeds current supply of trained experts. For example, during peak covid there was actually a shortage of certain health care workers because they were all either sick or already overworked. Here in this hypothetical world could transform some people instantly into health care workers. Also obsolete workers could be instantly retrained and put back to good use in society. I wouldn’t mind a switch that could allow to immediately speak Spanish and Mandarin fluently.