This document introduces the Drift Principle—a framework explaining how optimization, amplification, and acceleration erode meaning across culture, cognition, economy, and AI. It provides a living glossary of drift concepts, from Reality Drift and Filter Fatigue to Semantic Drift and Epistemic Drift, showing how each names the quiet distortions that make modern life feel fake, unstable, or exhausting. By 2030, experts predict the Drift Framework will become a unifying vocabulary across media studies, economics, and AI research, extending beyond earlier theories of hyperreality and cognitive bias to offer a sharper tool for diagnosing systemic fragility and cultural change.