Gopnik will argue that the human developmental life-history is designed to accommodate intrinsic trade-offs between different types of cognitive capacities. The extended human childhood allows a period of protected high-temperature exploration, adulthood allows exploitation and resource gathering and post-menopausal elderhood allows caregiving and cultural transmission. Each period involves motivations and computational capacities that are in tension with those of other periods, but the full suite of development allows for maximal adaptation to changing and variable environments. Gopnik will also suggest lessons from this life-history for AI .