Interesting enough concept: the ability of humans to hack their own brains

Even more interesting: the new technology based meaning of the word "hack"

Oh, how language evolves. To hack one's brains back in the day surely meant to chop them apart; put an axe to a man's head and have a field day (oo, another phrase with an interesting evolution).

To hack one's brains now is to control your own thoughts and, primarily, sleep patterns, or induce vivid hallucinations at will. WHAAT!