In this volume, authors are interested in the discrepancies that occur between the intention and effect of actions undertaken by artists and researchers. Thus described approach determines the illusion and uncertainty that reveal themselves en route to experience and intellectual cognition. They examine the anxiety or even true fear of making a mistake, which makes an impact on immediate and distant
future, but also the pleasure that errors may bring. The notion of error and its economy is analysed in a broad theoretical context (historical, cultural, philosophical, sociological, and political), as something as yet unrecognised – potential obstacle or side effect that will bring unexpected results.