Preimplantation genetic testing transformed IVF by enabling the screening of embryos for aneuploidy and severe monogenic diseases. Today, rapid advances in genomic datasets, AI-driven modeling, and large-scale validation are pushing reproductive genetics into a new phase defined by polygenic embryo testing. In this talk, Jonathan explores how polygenic prediction works, how risk models are validated, and why predictive power has improved dramatically in recent years. As tools evolve, clinicians and researchers are beginning to assess complex traits shaped by many genes, opening new possibilities for disease risk reduction and embryo selection based on multifactorial characteristics. At the same time, breakthroughs in genome editing and delivery technologies are bringing germline engineering back into scientific and policy conversations. As selection and editing begin to converge, reproductive genetics is moving beyond screening toward intentional genetic design. This forward-looking talk examines the science, implications, and emerging realities shaping the next frontier of human genetic intervention.