Explore the complex and evolving nature of software in this thought-provoking 32-minute talk by Dan Geer. Delve into contrasting definitions of software, the impact of edge and cloud computing, and the exponential growth of the field. Examine the challenges of defining software in the age of AI and machine learning, understand the importance of chain of custody in supply chain attacks, and consider the trade-off between system robustness and correctness. Gain insights into the implications of digital brittleness, the control of the past in shaping the future, and the uncertainty of predicting software's evolution. Navigate the quest for quantifying risk in the modern era and contemplate the future direction of software development and its impact on technology and society.