Fossil SCM
Added paragraph on feedback loops, control theory, and OODA to the fossil-v-git doc, distilling a recent discussion on the forum.
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| --- www/fossil-v-git.wiki | ||
| +++ www/fossil-v-git.wiki | ||
| @@ -384,11 +384,11 @@ | ||
| 384 | 384 | they're normally used to handle rare exception cases, whereas in |
| 385 | 385 | many Git projects, they're part of the straight-line development |
| 386 | 386 | process.</p></li> |
| 387 | 387 | |
| 388 | 388 | <li><p><b>Identical clones:</b> Fossil's autosync system tries to |
| 389 | - keep local clones identical to the repository it cloned | |
| 389 | + keep each local clone identical to the repository it cloned | |
| 390 | 390 | from.</p></li> |
| 391 | 391 | </ul> |
| 392 | 392 | |
| 393 | 393 | Where Git encourages siloed development, Fossil fights against it. |
| 394 | 394 | Fossil places a lot of emphasis on synchronizing everyone's work and on |
| @@ -395,10 +395,26 @@ | ||
| 395 | 395 | reporting on the state of the project and the work of its developers, so |
| 396 | 396 | that everyone — especially the project leader — can maintain a better |
| 397 | 397 | mental picture of what is happening, leading to better situational |
| 398 | 398 | awareness. |
| 399 | 399 | |
| 400 | +You can think about this difference in terms of | |
| 401 | +[https://en.wikipedia.org/wiki/Feedback | feedback loop size], which we | |
| 402 | +know from the mathematics of | |
| 403 | +[https://en.wikipedia.org/wiki/Control_theory | control theory] to | |
| 404 | +directly affect the speed at which any system can safely make changes. | |
| 405 | +The larger the feedback loop, the slower the whole system must run in | |
| 406 | +order to avoid loss of control. The same concept shows up in other | |
| 407 | +contexts, such as in the [https://en.wikipedia.org/wiki/OODA_loop | OODA | |
| 408 | +loop] concept originally developed to explain the success of the US F-86 | |
| 409 | +Sabre fighter aircraft over the on-paper superior MiG-15, then later | |
| 410 | +applied in other contexts, such as business process management. | |
| 411 | +Committing your changes to private branches in order to delay a public | |
| 412 | +push to the parent repo increases the size of your collaborators' | |
| 413 | +control loops, either causing them to slow their work in order to safely | |
| 414 | +react to your work, or to overcorrect in response to each change. | |
| 415 | + | |
| 400 | 416 | Each DVCS can be used in the opposite style, but doing so works against |
| 401 | 417 | their low-friction paths. |
| 402 | 418 | |
| 403 | 419 | |
| 404 | 420 | <h4 id="scale">2.5.2 Scale</h4> |
| 405 | 421 |
| --- www/fossil-v-git.wiki | |
| +++ www/fossil-v-git.wiki | |
| @@ -384,11 +384,11 @@ | |
| 384 | they're normally used to handle rare exception cases, whereas in |
| 385 | many Git projects, they're part of the straight-line development |
| 386 | process.</p></li> |
| 387 | |
| 388 | <li><p><b>Identical clones:</b> Fossil's autosync system tries to |
| 389 | keep local clones identical to the repository it cloned |
| 390 | from.</p></li> |
| 391 | </ul> |
| 392 | |
| 393 | Where Git encourages siloed development, Fossil fights against it. |
| 394 | Fossil places a lot of emphasis on synchronizing everyone's work and on |
| @@ -395,10 +395,26 @@ | |
| 395 | reporting on the state of the project and the work of its developers, so |
| 396 | that everyone — especially the project leader — can maintain a better |
| 397 | mental picture of what is happening, leading to better situational |
| 398 | awareness. |
| 399 | |
| 400 | Each DVCS can be used in the opposite style, but doing so works against |
| 401 | their low-friction paths. |
| 402 | |
| 403 | |
| 404 | <h4 id="scale">2.5.2 Scale</h4> |
| 405 |
| --- www/fossil-v-git.wiki | |
| +++ www/fossil-v-git.wiki | |
| @@ -384,11 +384,11 @@ | |
| 384 | they're normally used to handle rare exception cases, whereas in |
| 385 | many Git projects, they're part of the straight-line development |
| 386 | process.</p></li> |
| 387 | |
| 388 | <li><p><b>Identical clones:</b> Fossil's autosync system tries to |
| 389 | keep each local clone identical to the repository it cloned |
| 390 | from.</p></li> |
| 391 | </ul> |
| 392 | |
| 393 | Where Git encourages siloed development, Fossil fights against it. |
| 394 | Fossil places a lot of emphasis on synchronizing everyone's work and on |
| @@ -395,10 +395,26 @@ | |
| 395 | reporting on the state of the project and the work of its developers, so |
| 396 | that everyone — especially the project leader — can maintain a better |
| 397 | mental picture of what is happening, leading to better situational |
| 398 | awareness. |
| 399 | |
| 400 | You can think about this difference in terms of |
| 401 | [https://en.wikipedia.org/wiki/Feedback | feedback loop size], which we |
| 402 | know from the mathematics of |
| 403 | [https://en.wikipedia.org/wiki/Control_theory | control theory] to |
| 404 | directly affect the speed at which any system can safely make changes. |
| 405 | The larger the feedback loop, the slower the whole system must run in |
| 406 | order to avoid loss of control. The same concept shows up in other |
| 407 | contexts, such as in the [https://en.wikipedia.org/wiki/OODA_loop | OODA |
| 408 | loop] concept originally developed to explain the success of the US F-86 |
| 409 | Sabre fighter aircraft over the on-paper superior MiG-15, then later |
| 410 | applied in other contexts, such as business process management. |
| 411 | Committing your changes to private branches in order to delay a public |
| 412 | push to the parent repo increases the size of your collaborators' |
| 413 | control loops, either causing them to slow their work in order to safely |
| 414 | react to your work, or to overcorrect in response to each change. |
| 415 | |
| 416 | Each DVCS can be used in the opposite style, but doing so works against |
| 417 | their low-friction paths. |
| 418 | |
| 419 | |
| 420 | <h4 id="scale">2.5.2 Scale</h4> |
| 421 |