Applied ethics is a discipline of philosophy that attempts to apply 'theoretical' ethics, such as utilitarianism, social contract theory, and deontology to solve actual real world dilemmas. In so doing, it illuminates the potential for disagreement over the way theories and principles should be applied. Strict, principle-based ethical approaches often result in solutions to specific problems that are not universally acceptable. Drawing on medical ethics for an example, a strict deontological approach would never permit the deception of a patient about their condition, whereas a utilitarian approach would involve consideration of the consequences of so doing, and might permit lying to a patient if the result of the deception was 'good'. The example demonstrates that a deontologist can derive a different solution to a dilemma than a utilitarian. Topics falling within the discipline of applied ethics include: