The phrase «He who owns the information, owns the world» is familiar to us all. However, is completeness of information always a good thing? It turns out that in the principal-agent model this is not so. Transparency can decrease the willingness of agents to act in the most efficient way and provide incentives to behave in order to put themselves in a favorable light. The professor of Warwick University Niall Hughes spoke about this in more detail, presenting an article «How Transparency Kills Information Aggregation: Theory and Experiment».