Systems Economics Lexicon · Economic Physiology — Activity Architecture

Complementary Relationship

Activities positioned diametrically across the cycle share properties through matched relative position.

StatusSupporting term
SectionEconomic Physiology — Activity Architecture

Understanding Complementary Relationship

Diametrically opposite activities share properties because of matching relative position within one of the cycle’s two 2-part sequences: 1.1 and 3.1 both form contracts (procuring inputs versus procuring money), 1.2 and 3.2 both transport, and 1.3 and 3.3 both store, though each pair sits on opposite sides of production and sale. The relationship also links Phase 2 and Phase 4 (e.g., 2.1 and 4.1 both research, design, and validate plans), though the text notes this Phase 2/Phase 4 symmetry is weaker than the Phase 1/Phase 3 case, since 2.2 executes technical production plans while 4.2 executes management plans rather than being strict mirrors.

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