I loved this book, but then I like Michio Kaku in general so I was not surprised. He takes a look at the research on how the brain functions, and at the medical studies involved in tapping into the brain to do things like mentally control machines. The implications for assistance technology are pretty mind-blowing. From there he goes into whether it may be possible to upload a complete neuronal map into a computer, and what that might entail. Then he looks at beaming such a map via lasers to another star system as a form of interstellar travel. It is all very “science fiction”, but grounded in solid science. The BRAIN initiative from the Obama administration could make all of this come true sooner than you expect. I recommend highly.