1. People won't have the talent, drive, or skill to innovate new technologies/products/markets and earn a livable income in the future, so they need a basic income to keep them comfortable and well fed (UBI).
2. The UBI will allow all these same people who lack the talent, drive, or skill to innovate new technologies/products/markets to tap into their inner genius and use that free time to produce great works for humanity!

Lazy motherfuckers.
If you've got so many "great works" for humanity stored up inside you, PRODUCE THEM. I bet we can market your godly talent into a livable income.
"No man, people will finally have the *time* to focus on their great works, dude, you'll see!"
Right. Like that technological and social panacea we see coming out of the section-8 housing, WIC dependent, food-stamp saturated neighborhoods right now. BUT THE WORKS!!! HAVE YOU SEEN THOSE MARVELOUS WORKS coming direct from the ghettos, trailer parks, and government retirement homes?!? Awesome advancements in human evolution, literature, science, and philosophy - all made possible because we finally retired a class of people to full-time government assisted living. That's the dream folks, let's all get there together!