In software development terms, AI is becoming a third run time—the next system on top of which programmers will build and execute applications. The PC was the first run time for which Microsoft developed applications like the Office suite of tools—Word, Excel, PowerPoint, and the rest. Today the Web is the second run time. In an AI and robotics world, productivity and communication tools will be written for an entirely new platform, one that doesn’t just manage information but also learns from information and interacts with the physical world.