The Four Activity Cycle Relationships

Because the Activity Cycle is built by repeatedly subdividing two root sequences into 36 activities, that construction process leaves behind four natural, observable relationships between activities.

Subdivision Relationship: divisions from a common phase, and activities from a common division, resemble one another. This falls directly out of how the cycle is built — .1, .2, and *.3 are all formed by subdividing the same phase, so 1.1.1, 1.1.2, and 1.1.3 all share the property of contributing to the same purchasing contract (1.1).

Modifier Relationship: the pre-, central-, and post- designations imply shared characteristics regardless of which phase they belong to. Every .1 activity involves planning and outreach; every .2 activity executes the designed process; every *.3 activity reviews and validates what came before. This holds at both the 12-part and 36-part levels of the cycle.

Complementary Relationship: activities positioned diametrically opposite each other on the cycle share properties because of their matched position within their half of the cycle. Phase-1 and Phase-3 activities pair up this way — the activity procuring inputs and the activity procuring money are both, structurally, contract-making activities, just for opposite sides of production. The book is candid that this pairing is stronger for some phases than others: the Phase 2/Phase 4 pairing is real but not as tight a mirror as Phase 1/Phase 3.

Order Relationship: activities near each other in the cycle share properties from the sequential flow of actions around it — later activities often use earlier activities’ outputs as their own inputs. The book is explicit that this isn’t strictly a temporal claim in every case; the order relationship describes structural sequence, not always literal chronology.

See also: Reoriented Activity Cycle vs. Standardized Activity Cycle

Part of Activities & Resources: The Grammar, course 2 of 7 in the Locus Theory series. For the full term-by-term specification, see the Lexicon.

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