Deterministic chaos is a term used to describe a phenomenon characterized by seemingly random and unpredictable behaviour, despite being governed by deterministic laws of physics. Some synonyms for deterministic chaos include non-linear dynamics, sensitive dependence on initial conditions, and the butterfly effect. Non-linear dynamics refers to systems that do not exhibit a linear relationship between cause and effect, leading to complex and often unpredictable behaviours. Sensitive dependence on initial conditions, also known as the "chaos theory" is the idea that small variations in initial conditions can have drastic effects on the outcome of a system. The butterfly effect refers to the idea that a small change in one part of a system can lead to large-scale and unpredictable changes in other parts of the system.