If I found the cure for cancer, I'd be eager to share it and wouldn't worry about people being out of work. They just wouldn't. Cures take years and years of research and testing to gain validity. Also, there are people who have stages of cancer that wouldn't benefit from my cure. Finally, if we can truly fast forward decades and know that not another person will ever contract cancer--which would be a blessing--the efforts of the medical community and resource workers would be redirected to the other medical diseases that invade and take lives.