Therefore the data collected and the conclusions drawn from this scheme (and all the other UBI pilots that have come and gone) is incomplete. We need to gauge the effect it will have on populations not for a few years, but how will it affect generations? Will a child growing up in a UBI household have a different attitude towards the need to get a job or attend school? Is there even any point in getting an education if you know that the state will provide everything - and that there probably won't be any jobs for you anyway?
A three year experiment won't tell you about the long-term consequences.