8 Technologies That We Should Never, Ever Build

2. Electronic Telepathy

Mind-to-mind communication is one of those sci-fi technologies that actually might not be as far off as you'd think, with some experts estimating that the technology could be usable in the next 20 years.

This near-future technology will undoubtedly be rudimentary, but we would still have to consider the consequences of opening our brains up to the outside world. If another person can gain access to your brain to send a message, they can potentially get in there for more nefarious reasons.

If you have a chip in your brain that allows other to gain access, there is the potential for you to be hacked. Whether that simply involves some kind of intrusive "brain spam", or a takeover, altering memories, emotions and values. Depending on how you're hooked up, they might even be able to control you physically.

And that's just the lone hackers, imagine what this kind of technology could be like in the hands of a controlling government.