Explore a 26-minute conference talk from Data Science Conference Europe 2022 that delves into the architecture and implementation of large-scale question-answering systems. Learn about the geometric approaches to handling billions of vectors at Google-scale operations, and discover how natural language can be effectively represented through n-dimensional vectors. Gain practical insights through real-world applications demonstrated in the yottaanswers.com system, where these theoretical concepts are put into action. Delivered by Miodrag Vladic in Belgrade, this keynote presentation bridges the gap between theoretical vector mathematics and practical applications in modern question-answering systems.