Which field outside of debate commonly uses reductio ad absurdum?

Reductio ad absurdum is a common technique used in mathematics and logic, where an argument is established by demonstrating that an opposing assumption leads to a contradiction or absurdity. This method effectively highlights the validity of a proposition by showing that denying it would cause an untenable outcome. For instance, in mathematical proofs, one might assume that a certain statement is false and through logical reasoning arrive at an impossible conclusion, thus affirming the truth of the original statement. This technique is foundational in creating rigorous arguments and proofs, which are vital in both mathematical theory and formal logic, making it the predominant field utilizing reductio ad absurdum outside of debate.

While other fields like art, music, or sports may involve various forms of analysis and critique, they do not typically employ the structured logical framework that is characteristic of mathematical and logical discourse.