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A.3.3.TR:3 - Forces
| Force | Tension |
| Observable change and hidden steps | A large modeled step is convenient; intermediate reads, interactions or events may change the result. |
| Local rules and joint behavior | Each participant can obey its own rule while their combination violates the intended whole result. |
| Simultaneous relations and execution order | Coupled equations constrain values together; a computation must choose how to obtain a solution. |
| Constraints and interaction laws | A constraint excludes combinations, but additional laws may be needed to determine rates or successors. |
| Possibility, progress and probability | A rule can allow a result without guaranteeing eventual arrival or assigning its likelihood. |
| Detail and useful return | A complete model may be costly; one counterexample, conditional continuation or identified missing rule can already change the decision. |