Because we know there’s a chance we’ll have a new message, or because the very next You Tube video may be the one that makes us laugh, we keep hitting refresh, clicking the next link, and checking our devices compulsively. It’s as if our cell phones, BlackBerrys, and laptops have a direct line into our brains, giving us constant jolts of dopamine. There are few things ever dreamed of, smoked, or injected that have as addictive an effect on our brains as technology.
