All new technologies find their greatest promoters in sex and war. A Guardian article about interesting report out of the UK here about mind/machine interface and brain hacking.
Here is a tidbit I found most interesting: brain scanning shows that when people are searching for targets in a visual field, the brain sometimes sees a target but the person misses it because it doesn’t rise to conscious awareness. This seems to me to be a very solid scientific basis for ESP, second sight, etc.