Kluge: The Haphazard Construction of the Human Mind

How the accidents of evolution created our quirky, imperfect minds—-and what we can do about it.

Publishers Weekly

Why are we subject to irrational beliefs, inaccurate memories, even war? We can thank evolution, Marcus says, which can only tinker with structures that already exist, rather than create new ones: "Natural selection... tends to favor genes that have immediate advantages" rather than long-term value. Marcus (The Birth of the Mind), director of NYU's Infant Language Learning Center, refers to this as "kluge," a term engineers use to refer to a clumsily designed solution to a problem. Thus, memory developed in our prehominid ancestry to respond with immediacy, rather than accuracy; one result is erroneous eyewitness testimony in courtrooms. In describing the results of studies of human perception, cognition and beliefs, Marcus encapsulates how the mind is "contaminated by emotions, moods, desires, goals, and simple self-interest...." The mind's fragility, he says, is demonstrated by mental illness, which seems to have no adaptive purpose. In a concluding chapter, Marcus offers a baker's dozen of suggestions for getting around the brain's flaws and achieving "true wisdom." While some are self-evident, others could be helpful, such as "Whenever possible, consider alternate hypotheses" and "Don't just set goals. Make contingency plans." Using evolutionary psychology, Marcus educates the reader about mental flaws in a succinct, often enjoyable way. (Apr. 16)

Gary Marcus is a professor of psychology at New York University and director of the NYU Infant Language Learning Center. Marcus received his Ph.D. at age twenty-three from MIT, where he was mentored by Steven Pinker. His writing has appeared in the New York Times, Newsday, the Los Angeles Times, and other major publications. He lives in New York.