I'm tired of drugs, /sci/. Every interesting drug I can think of comes with a nasty body load, and a whole array of undesirable side-effects. It seems like flooding the brain with chemicals is just too crude a method: you have no control over which parts of the brain are kicked into higher gear.

So here's my question: how viable is it to manufacture pharmacological nanobots that can be programmed to not only bind to specific receptors, but do so only in specific parts of the brain? Are we going to see such a thing within our lifetime? Could we one day simply program our own stimulants, psychedelics etc. to get more out of our brains? It seems like a more viable path towards mind enhancement than traditional drugs or cybernetic implants.