AI faces reality gap at physical limits

The reality gap is the next major bottleneck for autonomous agents; if an agent can't prove a physical event happened, it cannot safely execute high-stakes coordination. AI functions as a truth-processing engine but currently lacks a truth-capturing foundation for the physical world. The Proof Stack aims to provide the primitives required for autonomous systems to scale without human intervention. The core risk identified is systemic failure caused by treating unverified data as ground truth, fundamentally altering how liability is handled in multi-agent systems.