[tim333]

I think it's a shame that this kind of experimentation is not done in a way that maximises the well being of mankind. Paralysed rats were sucessfully got to walk again at least as early as 2003 (http://www.youtube.com/watch?v=5x8e2qsAVGc) and it would seem to make sense to experiment on the odd human but instead we have to wait decades I think at least partly to cover the regulators arses in case there are any problems. But it would be better for society to have the odd experimental problem than thousands people suffer for years while they muck about with paperwork and the like.

I see from Wikipedia that Geron Corporation have recently submitted 28,000 pages of documents to the FDA for a stem cell related trial so maybe in 2023 or some such we'll be able to do for people what we could do for rats in 2003.