A mind map is a diagram that organizes words, ideas, and images hierarchically to gain fresh perspectives. It can be used to generate, visualize, structure, and classify ideas as an aid for study, organization, problem solving, and decision making. Brainstorming involves uncritically jotting down as many possible solutions to a problem as possible, prioritizing quantity over quality of ideas. Mind maps mix words and images in a loose and flexible process, allowing the whole picture to be glimpsed, unlike simple lists. Different types of mind maps include hand drawn, on mobile devices, and on computers using apps like MindNode.