If all it is doing is letting you issue commands to a computer, sure, fine. But if it’s letting you gain skills or writing to your memory, or other neat stuff like that, what is to keep the machine (or whoever has access to it) from taking control and rewriting your brain?
This brings to mind the following quotes from Sid Meier’s Alpha Centauri (1999).
Neural Grafting
“I think, and my thoughts cross the barrier into the synapses of the machine—just as the good doctor intended. But what I cannot shake, and what hints at things to come, is that thoughts cross back. In my dreams the sensibility of the machine invades the periphery of my consciousness. Dark. Rigid. Cold. Alien. Evolution is at work here, but just what is evolving remains to be seen.” – Commissioner Pravin Lal, “Man and Machine”
Mind-Machine Interface
“The Warrior’s bland acronym, MMI, obscures the true horror of this monstrosity. Its inventors promise a new era of genius, but meanwhile unscrupulous power brokers use its forcible installation to violate the sanctity of unwilling human minds. They are creating their own private army of demons.” – Commissioner Pravin Lal, “Report on Human Rights”
This brings to mind the following quotes from Sid Meier’s Alpha Centauri (1999).