Kantian deontology, founded by Immanuel Kant, is a moral theory that emphasizes duty, rationality, and adherence to universal moral laws rather than consequences. According to Kant, moral actions are those performed out of a sense of duty and guided by the categorical imperative, which requires individuals to act only according to maxims that can be consistently universalized. Despite its significant influence in ethical theory and applied ethics, Kantian deontology has faced numerous criticisms from philosophers, ethicists, and applied ethics scholars due to its perceived rigidity, abstractness, and sometimes counterintuitive prescriptions. These criticisms can be broadly categorized into issues related to rigidity, formalism, conflicts between duties, moral motivation, and practical applicability. One of the primary criticisms of Kantian deontology is its rigidity and absolutism. Kantian ethics is rule-based and categorical, meaning that moral laws are unconditional and must be followed regardless of circumstances or consequences. Critics argue that this rigid adherence to duty can lead to morally questionable outcomes. For example, the famous critique concerns situations where telling the truth, as Kant insists, might result in severe harm, such as revealing the hiding place of an innocent person to a murderer. In such cases, the Kantian imperative to always tell the truth appears morally counterintuitive, as it prioritizes duty over human welfare or consequences. Critics claim that a strict deontological approach does not adequately account for the complexities and nuances of real-world moral decision-making, where context often matters. Another significant criticism is that Kantian ethics is excessively formalistic.