Earlier quoted context omitted.
It's 5 years. Outlined in the link below https://blog.ycombinator.com/basic-income
So in other words, a long enough time to make people think they can draw reasonable conclusions about the viability of BI, when in actuality it's not long enough. You have to study the generational effects of this sort of thing. People are going to behave very differently when they know this will be around for a very short time versus the rest of their lives, nevermind how people behave when they're second or third g…
Reasonable seeming concerns, but you have to start somewhere to learn anything.