Re: UK UBI
"Er,... so take money off earners via taxation, and give it back to them? What? This is preposterous. It's admin crazy"
It's really not.
It means that everyone gets one payment (that is therefore utterly trivial to administer) and employers have a slightly simple bit of arithmetic to do when they do the PAYE calculations (because a significant number of employees will be on a single tax rate rather than two tax rates, one of which is zero).
It also means that there is no question about whether employment will improve your financial situation - it clearly will, because you don't lose the UBI when employed.