a16z's Ben Horowitz and Erik Torenberg speak with Alex Blania, co-founder and CEO of Tools for Humanity, to cover deepfakes, proof of human, what AI means for identity, and more. They cover the technical challenge of proving human uniqueness at scale using iris biometrics, the privacy architecture behind World ID, why platforms from social networks to dating apps to video conferencing will soon require proof of human verification, and more. Introduction Three big ideas people were…