Wednesday, October 14, 2015

The 6 laws (for reference)

I'm posting this with references mostly for my own archiving purpose.

This blog is excerpted from techrepublic above.  Appreciation to Werner Vogels for the discussion and Conner Forrest for the article.

Lucas Critique

"It is naive to try to predict the effects of a change entirely on the basis of relationships observed in historical data."

Gall's Law

"A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work. You have to start over with a working simple system."

Law of Demeter

"Each unit should have only limited knowledge about other units—only units 'closely' related to the current unit. Each unit should only talk to its friends; don't talk to strangers."

Occam's Razor

"The one with the fewest assumptions should be selected."

Reed's Law

"The utility of large networks, particularly social networks, can scale exponentially with the size of the network."

The Gestalt Principle

"The whole is greater than the sum of its parts."


The only thing I'd add to this is "don't get inexorably tied to a single mode" as it almost guarantees future failure.  There are exceptions, so it's likely not a law, but there's a lot of truth to it.


THE LACK OF HISTORIC KNOWLEDGE IS SO FRUSTRATING -- Ivan Pepelnjak, wish this were a law.  Those who fail to learn from history....



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