TRIZ, or "theory of inventive problem solving," is the next evolutionary step in creating an organized and systematic approach to problem-solving. According to the principle of equipotentiality, in a potential field, limit position changes (e.g. change operating conditions to eliminate the need to raise or lower objects in a gravity field). This principle can be applied in many ways, such as in a spring loaded parts delivery system in a factory, locks in a channel between 2 bodies of water (Panama Canal), or skillets in an automobile plant that bring all tools to the right position (also demonstrates Principle 10, Preliminary Action). By applying the principle of equipotentiality, we can simplify many processes and make them more efficient.