I always thought we used a third of our brain power, or we use 2 thirds something like that. Whatever it is there's still a portion of our brain that we are yet to use.
Maybe theres a neuro RECEIVER in there like what you get in radios. We know there are neuro transmitters that push thoughts around our bodies, making them move or speak.
On a radio you can turn a receiver into a transmitter just by using an extra piece of thin wire for an arieal.
I believe thought transmission and reception is a likely step in our evolutionary path. The next will be to double our life spans. The next, create energy strong enough that we can see it. The next, creation.