Forgiveness is the process of ceasing to feel resentment, inignation or anger against another person for a perceived offense, difference or mistake, or ceasing to demand punishment or restitution. This definition, however, is subject to much philosophical critique. Forgiveness may be considered simply in terms of the person who forgives, in terms of the person forgiven and/or in terms of the relationship between the forgiver and the person forgiven. In some contexts, it may be granted without any expectation of compensation, and without any response on the part of the offender (for example, one may forgive a person who is dead). In practical terms, it may be necessary for the offender to offer some form of acknowledgment, apology, and/or restitution, or even just ask for forgiveness, in order for the wronged person to believe they are able to forgive.