They want other people to forget wrongs that were done them, or important pieces of information, or they want people to remember things that never happened. They might want to induce nightmares or dreams. This category covers ways to hide, camouflage, and disguise things and people. Traditional abilities such as invisibility of all varieties. Disguises might range from a knowledge of makeup, wigs, and body language to supernatural shape-changing abilities or illusions.
People care about feeding themselves.
Detection or neutralization of poisons or harmful bacteria in foods. This category could also involve means of promoting the growth or reproduction of things used as food. People need shelter. Means of affecting the elements directly. Heat, cold, and weather.