" Cognitive psychologists sometimes talk in terms of two distinct types of consciousness: spotlight consciousness, which illuminates a single focal point of attention, making it very good for reasoning, and lantern consciousness, in which attention is less focused yet illuminates a broader field of attention. Young children tend to exhibit lantern consciousness; so do many people on psychedelics. This more diffuse form of attention lends itself to mind wandering, free association, and the making of novel connections—all of which can nourish creativity. By comparison, caffeine’s big contribution to human progress has been to intensify spotlight consciousness—the focused, linear, abstract, and efficient cognitive processing more closely associated with mental work than with play. This, more than anything else, is what made caffeine the perfect drug not only for the age of reason and the Enlightenment but for the rise of capitalism, too. "

― Michael Pollan , This Is Your Mind on Plants