untill we can identify exactly how everything works, we cannot do that, we are so far from understanding the human brain, so far, it's not that likely that we will ever be confident enough to say that we know everything about it, we're far more likely to learn of a far safer, more sensible way of transporting us around ....
the argument for objects is totally different, in most cases we have nothing really to loose, it would be a fantastic way of transporting objects that would normally cost hundreds of thousands of pounds to transport, such as aid to the third world, and supplies to areas in conflict etc .....
we should persue the technology, the chances of it being used on a human are very slim .....