social media. What makes these online distractions so sticky is how effectively they prime our brains for reward (mainly the feel-good neurochemical dopamine). Stanford neuroscientist Robert Sapolsky calls this priming the “magic of maybe.” When we check our email or Facebook or Twitter, and sometimes we find a response and sometimes we don’t, the next time a friend connects, Sapolsky discovered that we enjoy a 400 percent spike in dopamine. This can become distracting to the point of addicting.