Brains are unreliable, not that they’d ever admit it. A perfect example can be found in the proofing of a novel. Even on the tenth or twentieth read-through of a work-in-progress, you can still find typos and missing words and the like. And why? Because the brain has had enough of your piddly story, and in an effort to get back to thinking about how that drinking bird toy works, starts glossing over your text and missing the mistakes. Fortunately, there is an answer in technology.