Binary is the ultimate guide for understanding and dismantling the sex spectrum , the new cultural belief that sex exists on a continuum and that male and female are social constructs. By analyzing its ten most popular arguments, Zachary Elliott reveals how the tenets of the sex spectrum deny evolution, development, and genetics. Using the primary biology literature, the book provides the reader with a comprehensive scientific understanding of how the two sexes are universal phenomena and how complex genetic networks consistently result in a simple yet profound male or female. Zachary Elliott is the founder of the Paradox Institute, a research group that specializes in teaching the biology of sex and sex differences to the public. Zach has been researching, reading, and writing about sex differences since 2017 and has written two other books on the subject— Sex A Land of Confusion and The Gender Discrimination and Disparities in the Postmodern Era . He is also a writer and producer of more than twenty animated videos on the biology of sex, using his expertise in motion graphics and design to effectively communicate biological concepts.