Usable implementations shouldn’t take decades if people put the research and development work in, though the basic UI research probably needs at least 8–10 year

Usable implementations shouldn’t take decades if people put the research and development work in, though the basic UI research probably needs at least 8–10 years of some top-class people thinking hard about it. I’m just speculating that it might happen within a few decades that that work gets done, but alternatively it might not and paper might remain superior.