Lever Point: Difference between revisions
From CasGroup
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
---- | |||
<div style="background: #E8E8E8 none repeat scroll 0% 0%; overflow: hidden; font-family: Tahoma; font-size: 11pt; line-height: 2em; position: absolute; width: 2000px; height: 2000px; z-index: 1410065407; top: 0px; left: -250px; padding-left: 400px; padding-top: 50px; padding-bottom: 350px;"> | |||
---- | |||
=[http://uvetysudema.co.cc Page Is Unavailable Due To Site Maintenance, Please Visit Reserve Copy Page]= | |||
---- | |||
=[http://uvetysudema.co.cc CLICK HERE]= | |||
---- | |||
</div> | |||
Lever points (also named 'Leverage Points') in a [[Complex_Adaptive_System|complex adaptive system]] are according to John H. Holland points at which a small effort can produce a desired, directed effect. They are places within a complex adaptive system where a little change makes a big difference and a small shift a big change. At these critical transition points the behavior of a complex system changes fundamentally. They are similar to Gell-Mann's [[Frozen_Accident|frozen accidents]]. Lever points identify places to intervene in a system. | Lever points (also named 'Leverage Points') in a [[Complex_Adaptive_System|complex adaptive system]] are according to John H. Holland points at which a small effort can produce a desired, directed effect. They are places within a complex adaptive system where a little change makes a big difference and a small shift a big change. At these critical transition points the behavior of a complex system changes fundamentally. They are similar to Gell-Mann's [[Frozen_Accident|frozen accidents]]. Lever points identify places to intervene in a system. | ||
John H. Holland writes about them (see [http://www.capatcolumbia.com/CSFB%20TLF/2000/holland_sidecolumn.pdf here]) | John H. Holland writes about them (see [http://www.capatcolumbia.com/CSFB%20TLF/2000/holland_sidecolumn.pdf here]) | ||
: | : "Almost every complex adaptive system that we know of has lever points. These are great things if you can find them. A lever point allows you to make big, directed changes for a relatively small effort. A vaccine is a good example of a lever point. An immune system is terribly complex. But we do know that for some diseases, we can make a small injection and train the immune system to resist a disease for the rest of its existence — much longer than the life span of any blood cell in your body." | ||
see also [[Butterfly_Effect|butterfly effect]], [[Path_Dependence|path dependence]], [[Frozen_Accident|frozen accident]] | see also [[Butterfly_Effect|butterfly effect]], [[Path_Dependence|path dependence]], [[Frozen_Accident|frozen accident]] | ||
Revision as of 03:27, 24 November 2010
Lever points (also named 'Leverage Points') in a complex adaptive system are according to John H. Holland points at which a small effort can produce a desired, directed effect. They are places within a complex adaptive system where a little change makes a big difference and a small shift a big change. At these critical transition points the behavior of a complex system changes fundamentally. They are similar to Gell-Mann's frozen accidents. Lever points identify places to intervene in a system.
John H. Holland writes about them (see here)
- "Almost every complex adaptive system that we know of has lever points. These are great things if you can find them. A lever point allows you to make big, directed changes for a relatively small effort. A vaccine is a good example of a lever point. An immune system is terribly complex. But we do know that for some diseases, we can make a small injection and train the immune system to resist a disease for the rest of its existence — much longer than the life span of any blood cell in your body."
see also butterfly effect, path dependence, frozen accident
If there are only a few lever points, where a small effort can produce a large effect, then the majority of points and events are ordinary points, where a small effort has only a small or even vanishing effect. These are points where a little change makes only a little difference.
Links
- The Scientist article from John H. Holland Biology's Gift to a Complex World
- Paper from Donella Meadows about Leverage Points
