As an embryo, Dax Zey was tested for his likely future height, IQ, and risk of ADHD, depression, schizophrenia, bipolar disorder, diabetes, Crohn’s disease, prostate cancer, asthma, gout, hypertension, osteoporosis, heart disease, glaucoma, and more. Photo: Morgan Hornsby for New York Magazine The written record of Arthur Zey’s decision to have a baby is extensive. For years, Arthur has measured and catalogued nearly everything about his life and posted it on his personal website, where he