In his analysis of the spectacular society, Debord notes that the quality of life is impoverished, with such a lack of authenticity that human perceptions are affected, and an attendant degradation of knowledge, which in turn hinders critical thought. Debord analyzes the use of knowledge to assuage reality: the spectacle obfuscates the past, imploding it with the future into an undifferentiated mass, a type of never-ending present; in this way the spectacle prevents individuals from realizing that the society of spectacle is only a moment in history, one that can be overturned through revolution.