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Talk given in Oslo 14th May 2013, at the Scotsman Pub.
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systems thinking
cyberneticsthinking about systems primarily as
dynamic patterns of interaction and feedback
(rather than as static abstractions)
your wife is very
beautiful
Just calling it "feedback" doesn't mean that it has actually fed back.
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
There is not one living creature that lacks that integrated, total unification through feedback. John Gall
Compared to a frog or a salamander, our biggest manmade systems seem like simple wind-up toys.John Gall
Ignoring feedback merely means that the system will eventually experience a massive unpleasant surprise rather than a small unpleasant surprise.John Gall
It may look like a crisis, but it's only the end of an illusion.
tinitus
danger
change
Blood Sugar
is
is
Hyperglycemia
is
sensespancreas
Hyperglycemia
is
sensespancreas causes
insulin
Hyperglycemia
is
sensespancreas causes
insulin
senses
liver &muscles
Hyperglycemia
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hyperglycemia
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hyperglycemia
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hypoglycemia
Hyperglycemia
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hypoglycemia
Hyperglycemia
pancreas
senses
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hypoglycemia
Hyperglycemia
pancreas
senses
glucagoncauses
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hypoglycemia
Hyperglycemia
pancreas
senses
glucagoncauses
senses
is
sensespancreas causes
insulin
senses
liver &muscles
causes glycogen
Hypoglycemia
Hyperglycemia
pancreas
senses
glucagoncauses
sensescauses
Systems tend to oppose their own proper function.
Henri Louis Le Chatelier
Le Chatelier's Principle
All change can be understood as the effort to maintain some constancy...
All change can be understood as the effort to maintain some constancy......and all constancy as maintained through change.
The battle over food and territory between two species is only one half of the story.
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 BatesonSteps to an Ecology of Mind (I think)
evolution
evolution is always
evolution is always
co-evolutionJohn Gall
What is involved is not simply survival
of the fittest
What is involved is not simply survival
of the fittestbut survival of the
fitting-in-est.John Gall
break;
slack
Queues amplify variability. Moving from 75 to 95% utilization increases variability by 25 times.
local optimization=~=
global pessimization
the whole is greater than the sum of the
parts
Successful change can only come in the context of a clear understanding of what may never change, what the organization stands for. ...
If nothing is declared unchangeable, then the organization will resist all change. When there is no defining vision, the only way the organization can define itself is its stasis.
Every effect has a cause...
The Causation Fallacy
Every effect has a cause... and we can tell which is which.
The Causation Fallacy
defects latenesscause effect
====
defectslateness
cause effect====
The Law of Unintended Consequences
Failure demand
"Demand caused by a failure to do something or do something right for the customer"
John Seddon
Failure demand in software
?