For as long as humans have measured their days, time has been viewed as the one resource that cannot be stretched, paused, bought, or reclaimed. We can learn new skills, regain lost money, and rebuild strength, but time has always marched in one direction. Yet the rapid rise of artificial intelligence challenges this assumption. For the first time in history, ordinary people can multiply their effective time by outsourcing the very processes that used to consume it: remembering information, exerting mental energy, and grinding through long hours of research or problem-solving. In this sense, AI functions as a modern time machine—not by bending the laws of physics, but by changing the mechanics of human productivity. Human capability has always been shaped by three core variables: memory, mental energy, and time. Memory determines what we retain and how quickly we can access it. Mental energy dictates how long we can focus and how efficiently we can work. Time limits everything else; it is the container that holds all other human efforts. Traditionally, improving any of these three required years of discipline. To grow in knowledge, one had to study. To gain skill, one had to practice. To conserve mental energy, one had to rest, plan, and pace oneself. Progress was real but slow. The internet dramatically changed the memory equation. Instead of storing facts in our heads, we learned to store them online. Search engines externalized memory; a person could retrieve answers in seconds that once took hours of flipping through reference books. But while the internet provided access to information, it did not remove the effort required to sift through results, interpret data, or make decisions. The mental energy cost remained. Searching the web still drained focus and demanded time. Knowledge was accessible, but it was not yet effortless. AI is the next leap in that evolution. It does not merely store information; it organizes, interprets, and applies that information. When someone uses AI to complete a task—whether it’s analyzing a document, drafting a response, solving a technical problem, or clarifying a complex process—they bypass the slow steps of searching, verifying, understanding, and synthesizing. In effect, they borrow a second brain, one that never tires and never forgets. Memory becomes infinite. Skill acquisition accelerates because the barrier to entry collapses. A person no longer needs to “know everything” in order to do something; they simply need to know how to ask.