<i>On a blindingly sunny September weekend in Southern California, 500 or so biohackers and brain tinkerers and people who would like to sell them things congregate at the Pasadena Convention Center for the Bulletproof Biohacking Conference, a three-day, $1,599 series of workshops...</i><p><i>...40 Years of Zen (an Asprey-endorsed neurofeedback program that promises its users 12 more IQ points, more creativity, and less mental clutter in exchange for seven days of their lives and $15,000),...</i><p><i>Because these supplements and systems promise vague improvements rather than make specific health claims, they’re not subject to FDA approval—which means that they may be not only ineffective, but dangerous. (Not for nothing do Bulletproof conference attendees sign many-paged waivers before entering the convention hall.)</i><p>Wow.