and: what is the chances you can send say 5 people and not one of them will have a condition that requires hospital attention in 2 years? I love how scientists (and I have a physics degree) love to suggest very expensive projects and they always claim it will save humanity. Heck I worked in a genetics laboratory and everyone would be doing stupid (but interesting) things like figuring out how lizards grow their tails back. When grant time rolled around it was always: we could grow our own organs, we could cure cancer, we could cure paralysis etc. Heck they literally had whole conferences devoted to people studying one particular type of worm. Sure those things could happen but all the scientist's cared about was getting their PhD so they could land a good post doc. Cancer landed on the grant proposal because that was the circus you had to run to impress the granting committees and or tick boxes to be considered for different government sources of funds.
Anyone thinking the guys at big science facilities are completely working for the benefit of humanity and their own fame and fortune doesn't come into play are smoking crack. Science has as much snobbery as any military or private organization I ever worked about. Getting the best funds, grad students, lab equipment, lab location (EMBL, CERN, Harvard etc), getting your papers in the best journals etc.is 90% of the work senior researchers concern themselves with in my experience.