No two people are the same, not even identical twins. There are the overachievers and, alternatively, the underachievers, the alcoholics and the teetotalers, the shy and the extroverts, and every possible mix in between. Living With Our Genes argues that genes are the most important factor in the process of developing the complex variability of human nature. Hamer and Copeland expound the idea of ​​the nature-nurture controversy by identifying the differences between temperament and character. Temperament is the set of primordial behavioral tendencies that we acquire, which are adapted to varying degrees by our character, our beliefs and the values ​​that the surrounding environment gives us. It's essentially a game between genes and environment, with a constant back and forth as the authors explain the behavioral characteristics that influence our lives. The nature/nurture argument arises from the fact that people are more reluctant to accept a genetic influence on behavior that does not involve simpler traits such as eye color or an inherited disease. Hamer and Copeland put it this way: "We accept it ...