Each pattern has unique characteristics which serve as special learning tools to the developing student. If these moves are mixed, or arbitrary, the pattern loses its effectiveness as a development exercise. There is no longer a systematic, incremental development process that leads the student toward imprinting correct form, power, breath control, etc. If alterations are made, patterns will lose their individual characteristics and standards will be lost.
When performing patterns, form and technique must be true to the Taekwondo fundamentals, for example, body transitions must not be altered to make it easier to maintain control. Incorrect body transitions lessen the level of difficulty and the efficiency of movement. The validity of the transitions actual sparing or fighting may be lost to theatrical value. Perfection of movement, and thus, perfection of character are focal points of pattern performance