>If we have the interface why stop at brain to text? Why not make the computer a part of our brains?

This is how the Borg came about.

Actually I read about some guy who has a chip implanted which allows him to use his otherwise unusable hand. Right now it requires a bank of computers to function in the lab.

Paralyzed man with breakthrough brain chip plays guitar video game, swipes credit card

http://wexnermedical.osu.edu/blog/new-tech-helps-paralyzed-m...