If you look at how people act in work, family and love life, signalling explains 90% of it.

Hanson became interested in signalling because his work in prediction markets. Prediction market well implemented seems to work and produce good actionable information. Companies were eager to adopt them. In practice they are catastrophe because they reveal how the choices being made are based on other things than what is said. The whole social structure in workplace is destroyed if the positions and knowledge people signal is revealed to be not true.