Friedman wasn't a Basic Income proponent. He was a proponent of negative taxation. He was only interested in being consistent with the way we treat income tax and welfare. He felt that the welfare manager's job of determining exactly how to administer relief to recipients was something that couldn't be done properly. He preferred just giving cash based upon income levels on a sliding scale.
http://www.youtube.com/watch?v=xtpgkX588nM
Given the abuse of the Welfare system over the half century since Friedman supported negative taxation, I don't doubt that he would have different views and controls for such a system were he alive today.
A lot of ideas sounded good 50 or 100 years ago that we have tried but have failed. It doesn't mean we should keep trying them.
The entire interview is online at: