Framework Note #1: Proxy Optimization in Complex Systems — Why Metrics Replace Real Outcomes

This paper is the first in the Reality Drift Framework Notes series, a set of short comparative papers examining recurring mechanisms of drift across modern systems.This note examines how complex systems begin optimizing measurable proxies instead of the underlying real-world outcomes those proxies were originally designed to approximate.Across domains such as artificial intelligence, business, and institutional governance, metrics are introduced to represent success. Over time, optimization pressure shifts toward improving the metric itself rather than the phenomenon it was meant to track, producing a structural form of misalignment in which systems appear effective while gradually drifting from reality.This note establishes proxy optimization as a primary mechanism connecting later patterns such as metric gaming, reward hacking, and institutional goal displacement.