This text provides a philosophical reflection on the concepts of error, mistake, good, and evil. The author argues that an error is rarely accidental, often possessing deep roots and a tendency to persist. A central thesis is that a mistake only becomes a mistake within a specific context; in isolation, it remains a mere occurrence without meaning. This relational perspective is extended to the categories of good and evil, which are viewed not as inherent properties of isolated entities but as qualities emergent from context and temporality. By highlighting the event-based nature of existence, the author explains how a future context may redefine a previous error as a "fortunate mistake," though never without the necessity of correction and rectification. Finally, the text critiques the Cartesian quest for an indubitable foundation, suggesting that Descartes's attempt to discard all context led to a fundamental misunderstanding of reality. Philosophy, therefore, must embrace the interconnectedness of context rather than seeking an isolated starting point.