The document presents a talk by Jeffrey G. Long on the topic of notational engineering, discussing the evolution and significance of various notational systems used in writing, mathematics, music, and more. It emphasizes the impact of notations on our understanding and conceptualization of the world, aiming to create new and effective notational systems to push the limits of complexity. Long introduces foundational issues, metrics and tests for effectiveness, and his establishment of the Notational Engineering Laboratory to further research in this area.