Its not like its physically impossible to design some sort of remote operated vehicle that can return with 200 lbs of material if these are within the mission parameters. That’s what I am getting at. Not that the missions were insignificant or the results poor, but that today especially considering present technology over that from 60 years ago, there doesn’t seem to be a compelling reason to put a human at risk in outer space over designing a remote vehicle to perform the same procedures you expect the human to do.