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The integration of artificial intelligence into materials discovery processes has transformed how new substances are identified, predicted, and prioritized for development. This conceptual exploration positions Materials AI not merely as a technical instrument but as an active participant in broader decision ecosystems, where its outputs influence downstream choices across industry, regulation, and the societal allocation of resources. Drawing on recent advancements in machine learning applications to materials science, the discussion examines how these systems shape epistemic authority, allocate attention across vast chemical spaces, and mediate trade-offs between performance optimization and broader considerations such as sustainability and equity. Through analytical reflection on interaction dynamics between AI-driven predictions, human judgment, and institutional structures, the framework reveals steering logics that emerge when Materials AI guides prioritization, resource commitment, and risk assessment in materials pipelines. Rather than treating AI as neutral, the interpretation emphasizes feedback structures wherein model assumptions and data legacies propagate into real-world decision pathways, generating epistemic dependencies and value-laden outcomes. This perspective invites scrutiny of the implicit policy roles enacted by Materials AI, highlighting the need for interpretive frameworks that capture its influence on collective decision horizons without reducing it to tool-like functionality. The analysis underscores the interplay between computational acceleration and the reconfiguration of responsibility in materials innovation landscapes.