Brain Coprocessors

http://www.kurzweilai.net/brain-coprocessors

This basically sounds like a computer that is connected to your brain and can directly interact with it. It would read out what your brain is processing and then deliver information back to the brain. It would be great if this could be used, as mentioned, for people with dementia or addictions, to help them with memories, or influence their decisions and habits when fighting addiction. It sounds like a lot of other interesting things could be done with this down the line. Could one access any information with this? It would be cool if one could download languages and then instantly speak them.