> If something is "ten years away", it means we simply don't know how to do it In terms of medicine, human trials generally take ten years. If something is ten

> If something is "ten years away", it means we simply don't know how to do it In terms of medicine, human trials generally take ten years. If something is ten years away, I would take it to mean there is a promising solution now. It just might not look nearly as promising in ten years, after it has been rigorously tested on people.