[msutherl]

A "brain interface" is also superfluous because your senses are already "brain interfaces". Any interface connected to your brain will "appear" to you as a new sense organ.

I'll take some new sense organs for sure, but a "brain interface" is not the panacea people make it out to be. For one, the thoughts in our head are a jumbled mess and are only clarified through expression, which involves sensing and acting with your body. Any new interface will become a new body part. You cannot speak before you speak and you cannot write before you write just as you can't run before you run.