When I read about Iain Duncan-Smith's proposals for a single Universal Credit I was broadly in agreement but an obvious problem came to mind. It relies on a major IT system. I was going to write about that record but Colin Talbot has already written this post so I don't need to bother. I will say, though, that the attempt to bring the NHS into a national system is a mess and it seems to me that a Universal Credit system must be many times more complicated.