Already I've been hearing about investigations into the brain/mind interface, and how in the future not only such things as sexual orientation or sociopathy but even political affiliation or shopping preference could be mapped neurally. Given that, it's only a matter of time before we develop the technology to fine tune and alter human emotions and thoughts on a chemical level. I can see a future, perhaps not even a distant one, where politics, consumer choice, social circle and intro- and extroversion are either decided at birth or, even more terrifying, delivered in a pill. How could we possibly regulate such a market? You think the war on drugs is hard? Wait until the war on "Shop At Wal-Mart" pills. Can you imagine if someone invented a love potion that actually worked? Human civilisation would end within a year. Given that such a reality is at least conceivable, how could we possibly deal with the consequences?