nobody needs to know medicine because we're all perfectly healthy. Nobody gets hurt in accidents..
I do not believe these stuff. The scenario in the new world has to be compatible with physical and mathematical prerequisitions, otherwise its a nonsense. If a person dies by an accident, the person has to be resurrected again. Or - otherwise - there had to exist a technical possibility to travel into the past to rescue him;-) ( I know, its the old Terminator story; but please dont laugh - take it seriously!). An other problem would be the presence of 80 - 100 billion people, resurrected here on earth. I do not like a standing-place in a cinema or in a theatre;-(