The difficulty of anticipating strategic surprises is often ascribed to a ‘signal-to-noise’ problem, i.e. to the inability to pick up so-called ‘weak signals’ that foretell such surprises. In fact, monitoring of weak signals has become a staple of competitive intelligence. This is all the more so since the development of information technology that allows the accumulation and quasi-automatic processing of massive amount of data. The idea is that the identification of weak signals will enable an organization to detect a problem (or an opportunity) early and, hence, to react more quickly and more appropriately.