Do tinfoil hats work well to filter out "the voices"?
I'm probably missing something simple, but was there something about the question in the OP you found crackpottish? Brain machine interfaces are a very real line of active study and investment, so what am I missing?
Oh yeah. A sense of humor.
I think the op got the joke, probably blew his coffee out his nose when he read it.
I found nothing at all "crackpottish" (spellcheck is pitching a fit right now) about the post, since "brain machines" are quite commonly used for various purposes. Most commonly I think, in diagnosing sleep disorders.
And, less commonly I think.. transferring a rabbits mind into a chicken and visa versa. But those never seemed to end well. It was usually the Doctor who ended up in the chicken.
Seriously though, I do see a lot of application for these. Be it running as a computer interface, controlling remote devices, such as a power wheelchair, and even someday, treatment of brain or nervous system disorders such as helping a person with a severed spinal cord walk again, by one day, bypassing the damaged area. If all of these were available in the next 20 years, I would not be at all surprised.
Now, I suppose if someone were interested in getting started, the study of Neurobiology would be a good place to start.