TRIZ, or "theory of inventive problem solving," is a systematic approach to problem-solving that is based on evolution. The principle of transforming physical or chemical states is one of the key ideas in TRIZ. This principle suggests that sometimes it can be useful to change the object in some way, such as its temperature, concentration, or density. This change can have an effect on factors such as flexibility, load-bearing, or chemical reactions. In other words, by changing the state of an object, we can often improve its performance. Consequently, the principle of transforming physical or chemical states is a powerful tool that can be used to solve a wide range of problems.