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PHY.8:3 - Forces
| Force | Tension |
| Microscopic detail and useful aggregate | A detailed account can explain a changed response, while an unchanged total may need only a balance. |
| State counting and preparation | Many alternatives are possible, but the preparation and dynamics can weight them differently. |
| Typical behavior and rare outcomes | A narrow central range can support ordinary operation while missing a consequential excursion. |
| Individual properties and collective dependence | Local statistics can be unchanged while correlations alter the whole. |
| Long-time theory and available time | A limiting result may be valid yet unavailable within the observation interval. |
| Sampling economy and physical meaning | An efficient sampler can obtain a statistic without reproducing physical motion. |