You can replace things but I'm not sure you can add new limbs. The brain can learn all sorts of new things but it'll be extremely tricky to try and connect totally new nerves. When you put an artificial hand you don't just plug stuff into the brain but you connect to nerves that are already there, I don't think they even use your hand nerves but have to take them from other muscles.
And you can't make a tail yet but people are starting to grow tissues and organs. If I remember they've grown a living lung artificially and I think someone was getting an eye to grow as well.
"If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind."
~John Stuart Mill~
You use all your brain. >.>
You can replace things but I'm not sure you can add new limbs. The brain can learn all sorts of new things but it'll be extremely tricky to try and connect totally new nerves. When you put an artificial hand you don't just plug stuff into the brain but you connect to nerves that are already there, I don't think they even use your hand nerves but have to take them from other muscles.
And you can't make a tail yet but people are starting to grow tissues and organs. If I remember they've grown a living lung artificially and I think someone was getting an eye to grow as well.
"If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind."
~John Stuart Mill~