Although maybe well meaning by some, the premise of Guaranteed Basic Income would be nothing short of a disaster. Currently in the US we already have such a program called Welfare. While yes Welfare has prevented things like mass starvation it has built and reinforced generational poverty. Welfare proves that when otherwise healthy human beings become idle bad behaviors ensues for most of them.
My hunch is that you have people like Zuckerberg that would want nothing more than scores of dumbed down, ignorant, lazy and apathetic people with nothing to do better all day than post on FB. Beware of con man trying to bestow gifts to the disadvantaged.
Instead, we should redefine work and have guaranteed employment. Every able bodied man and woman should be making a contribution to society. The exception would be those taking care of younger children or elderly parents. Even then they could likely eek out 10 to 20 hours a week. Guaranteed employment should maximize skills and abilities, not just have millions digging holes all day.
The eight hour a day, 40 hour work week came about in the 1930s as a result of the union movement. Prior to the 1930s for many Americans the typical workday was 10 to 12 hours a day, six days a week with Sunday off for the Sabbath. Union leaders reckoned that a man (as men mad up most of the workforce at the time) should split his day into thirds. A third for work, a third for rest and sleep and a third for family, self, friends, and community. In addition, a man should have two days off for each five worked (hence the weekend) with more time towards family, friends, self, community and devotion to God. Any employer requiring more than that amount should be required to compensate the employee for the imposition. Therefor the requirement of 1.5 pay.
Now more than 80 years later technology is changing the workplace. We don't make phone calls with a 1930s style phone, why are we following 1930s work protocol? If the workweek can be reduced shouldn't we require people to attend to community with their extra time? An extra hour a day teaching an after hours class, maintaining the local park, coaching a little league team.
More and more the number of good paying jobs on all fronts, not just on the factory floor are disappearing. Virtually no one can maintain independent living on a part time low value service job. Nor can we expect families to use predatory lending as a way to bridge income gaps. Ultimately something has to give or society will continue to deteriorate.
Now after saying all this how confident am I that both the public and private sector will work this out in the same way they took up the challenge of putting a man on the moon by the end of the 60s? Sadly, not very at all. I think the more realistic approach will be to vastly expand the welfare state using printed money to fund it. Most of America will resemble third world and attitudes will change.
We will see suburban and urban blight with decay everywhere. Tons of children will be born out of wedlock and petty crimes will be rise. Drug use (already soaring) and alcohol abuse will get far worse. Society will devolve, becoming more animal like.