On the other hand, chaos theory is

On the other hand, chaos theory is sometimes considered as a contradiction to Laplace’s demon: it describes how a deterministic system can nonetheless exhibit behavior that is impossible to be predicted—as in the butterfly effect, minor initial variations between the starting conditions of two systems can result in major differences, while this explains unpredictability in practical cases. Applying this to Laplace’s case is questionable: under the strict demon hypothesis all details are known—to infinite precision—and therefore variations in starting conditions are non-existent. Put another way: Chaos theory is applicable when knowledge of the system is imperfect whereas Laplace’s demon assumes perfect knowledge of the system, therefore chaos theory and Laplace’s demon are actually compatible with each other.