Rogers' theory, also known as the Science of Unitary Human Beings, views humans as open energy fields that interact with environmental energy fields. The theory's concepts include energy fields, openness between fields, patterns, and homeodynamics principles of integrality, resonancy, and heliecy. Nursing aims to facilitate optimal patterning between human and environmental energy fields through noninvasive interventions and mutual process of pattern appraisal and reappraisal.