Seminar Keeping in the dark with hard evidence Microeconomics Seminar Add to calendar 2025-10-21 14:00 2025-10-21 15:15 Europe/Rome Keeping in the dark with hard evidence Conference Room Villa La Fonte YYYY-MM-DD Print Share: Share on Facebook Share on BlueSky Share on X Share on LinkedIn Send by email Scheduled dates Oct 21 2025 14:00 - 15:15 CEST Conference Room, Villa La Fonte Organised by Department of Economics This seminar features a discussion with Professor Alexander Frug (Università Pompeu Fabra). We present a dynamic learning setting in which the periodic data observed by the decision maker is mediated by an agent. We study when, and to what extent, this mediation can distort the decision maker’s long-run learning, even though the agent’s reports are restricted to consist of verifiable hard evidence and must adhere to certain standards . We introduce the manipulation-proof law of large numbers – that delivers a sharp dichotomy: when it holds, the decision maker’s learning is guaranteed in the long run; when it fails, the scope for manipulation is essentially unrestricted.