University of Waterloo researcher Chris Eliasmith and his team have built a software model of human brain (http://www.tgdaily.com/general-sciences-features/67819-artificial-brain-spaun-passes-iq-tests). This model, called SPAUN, can imitate human brain with a 2.5 million virtual neurons. The important thing to note from these studies is that SPAUN makes mistakes just like human do. It can remember the first and last item in a list better than the items in the middle, just like us. Computers do not make such mistakes. This model will certainly help neuroscience research and this approach is certainly valid but my question to other researchers who simply want to put a human brain inside a machine is this. Why build a machine that is flawed just like us? I believe the future machines should all be based on computation methods that are used in present day computers. This technology will eventually create machines that will be more powerful than the human brain, but will still be under human control because it is created by human. This is like a 500 kg elephant that is much more powerful than a 75 kg man but obeying his orders!!