Brain-to-brain communication is the holy grail of sorts for science, representing an age where telepathy becomes reality. And if some researchers are to be believed, we’re getting close. A 2014 study successfully “sent” one-word messages across country lines from one subject’s brain to another. However, they had to use some tech to do it, including EEG sensors and a trans-cranial magnetic stimulation system. This machinery helped them to translate letters into binary code, and then into flashes of light perceived by the recipient. The full process took 70 minutes to convey one word.