A transition applies an event or result to the current state and selects a next state. Its preconditions and effects should be explicit enough to test.

A Transition Changes Graph State

A branch predicate maps current evidence to one outgoing route. It should be mutually understandable, cover expected cases, and provide a fallback for unknowns.

Branch Predicates Must Be Decidable

Control-flow edges determine execution order, branching, joining, retry, and termination. They should not be inferred accidentally from where data happens to be stored.

Control Flow Answers What Runs Next

A router selects a specialist, tool, or path from evidence about the request and declared capability. It needs a fallback when no option is suitable or confidence is low.

Routers Match Requests to Capabilities

A fixed workflow follows predetermined transitions; an agentic workflow delegates some choices to a model or policy. Good designs use deterministic control where rules are known and bounded choice where ambiguity is real.

Workflow and Agentic Choice Form a Spectrum

In this situation—moving a learner from practice to remediation after a misconception appears—which choice best applies “A Transition Changes Graph State”?

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