Definition: Ecdemic is a concept in computer science and information theory that refers to a phenomenon where an algorithm or decision-making process becomes unstable due to noise, errors, or other factors. In this context, "ecdm" stands for "eclipsing," which means breaking away from the normal state of affairs. An ecdemic system is one that experiences rapid changes in behavior or outcomes when it encounters a sudden change in conditions, such as an increase in input data or a significant deviation from