Companies who have engaged in certain activities in the past which were legal at the time, but which are now illegal, should not be required to rectify or provide compensation for their past actions, unless these actions were immoral or blatant violations of acceptable practices at the time. The proper governing authorities should bear the responsibility for rectifying or providing compensation, if necessary, for past actions which were not considered illegal at the time. In most cases, however, the costs (or benefits) of any previously legal activity would not be levied on any entity. Instead, the burden of dealing with these costs should just be accepted as the costs of living in a society which reviews and revises its laws.