Systems thinking
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The document is a series of blog posts by Jon Jagger on systems thinking. It discusses concepts like feedback loops, emergence, unintended consequences, and homeostasis in systems. Key ideas are that influence flows both ways in a system, living systems have much more feedback than human-made ones, and systems aim to maintain stability through internal change.
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Systems thinking
- 2. thinking about systems as dynamic, evolving patterns of interaction and feedback Sunday, 2 March 14
- 3. it is an axiom that influence is both a cause and an effect. nothing is ever influenced in just one direction. Peter's Axiom Sunday, 2 March 14
- 4. to say that certain events are causally connected is only a clumsy way of saying they are features of the same event Sunday, 2 March 14
- 5. The Causation Fallacies every effect has a cause and we can tell which is which. Jerry Weinberg Sunday, 2 March 14
- 6. cause effect ? defects Sunday, 2 March 14 lateness
- 7. cause effect ? defects Sunday, 2 March 14 lateness
- 8. Sunday, 2 March 14
- 10. feedback Sunday, 2 March 14
- 13. Scrum Guide " Scrum Teams deliver products iteratively and incrementally, maximizing opportunities for feedback. Sprint Review: ... the presentation of the Increment is intended to elicit feedback and foster collaboration. " Sunday, 2 March 14
- 14. just calling it "feedback" doesn't mean that it has actually fed back Sunday, 2 March 14
- 15. the amount of feedback built into living organisms differs by many orders of magnitude from the amount we build into man-made systems. John Gall Sunday, 2 March 14
- 16. there is not one living creature that lacks that integrated, total unification through feedback. John Gall Sunday, 2 March 14
- 17. compared to a frog or a salamander, our biggest manmade systems seem like simple wind-up toys. John Gall Sunday, 2 March 14
- 18. ignoring feedback merely means that the system will eventually experience a massive unpleasant surprise (rather than a small unpleasant surprise) John Gall Sunday, 2 March 14
- 19. it may look like a crisis, but it's only the end of an illusion Sunday, 2 March 14
- 20. change Sunday, 2 March 14
- 21. blood Sunday, 2 March 14 sugar
- 22. Sunday, 2 March 14
- 23. Sunday, 2 March 14
- 24. is Sunday, 2 March 14
- 25. is Sunday, 2 March 14
- 27. Hyperglycemia senses causes is Sunday, 2 March 14 pancreas
- 29. Hyperglycemia senses causes pancreas causes insulin senses is liver & muscles Sunday, 2 March 14
- 30. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is liver & muscles Sunday, 2 March 14
- 31. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is liver & muscles Sunday, 2 March 14
- 32. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is causes Hypoglycemia Sunday, 2 March 14 liver & muscles
- 34. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is causes liver & muscles senses Hypoglycemia causes pancreas Sunday, 2 March 14 glucagon
- 35. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is senses causes liver & muscles senses Hypoglycemia causes pancreas Sunday, 2 March 14 glucagon
- 36. Hyperglycemia senses causes pancreas causes causes insulin glycogen senses is causes causes senses liver & muscles senses Hypoglycemia causes pancreas Sunday, 2 March 14 glucagon
- 37. Le Chatelier's Principle systems tend to oppose their own proper function. Henri Louis Le Chatelier Sunday, 2 March 14
- 38. all change can be understood as the effort to maintain some constancy... ...and all constancy as maintained through change. Sunday, 2 March 14
- 39. the battle over food and territory between two species is only one half of the story... ...the battle is a means or process of generating, maintaining, and stabilizing an ecosystem Gregory Bateson Steps to an Ecology of Mind (I think) Sunday, 2 March 14
- 40. evolution is always co-evolution Sunday, 2 March 14
- 41. what is involved is not simply survival of the fittest but survival of the fitting-in-est Sunday, 2 March 14
- 42. Sunday, 2 March 14
- 43. Sunday, 2 March 14
- 44. Sunday, 2 March 14
- 45. Sunday, 2 March 14
- 46. Sunday, 2 March 14
- 47. Sunday, 2 March 14
- 48. slack Sunday, 2 March 14
- 49. moving from 75% to 95% utilization increases variability by 25 times Sunday, 2 March 14
- 50. flow utilization Sunday, 2 March 14 75% 95%
- 51. that which optimizes one part of the system necessarily undermines the system as a whole. Sunday, 2 March 14
- 52. whole Sunday, 2 March 14 > parts
- 53. Pu239 Sunday, 2 March 14
- 54. 2kg + 3kg == 5kg Sunday, 2 March 14
- 55. 5kg + 5kg == Sunday, 2 March 14 ?
- 56. Sunday, 2 March 14
- 57. in medio stats virtus Sunday, 2 March 14
- 58. The Law of Unintended Consequences http://en.wikipedia.org/wiki/Cobra_effect Sunday, 2 March 14