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Scott: Come On, Obviously The Purpose Of A System Is Not What It Does

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This made me reflect that I hadn't actually thought critically about the phrase (at least, commensurate to how often it's used). For fun, if you think the purpose of a system is what it does, write what you think that means, before reading Scott's critique, then write if you've updated your opinion. For example: I think it's a useful way of re-framing obviously dysfunctional systems, so as to analyze their dysfunction, but Scott is persuasive that it's not a good means of understanding systems, in general, so people should be more cautious about adopting this framing and using the phrase, rhetorically.

(Spoilers go between two sets of "||")

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So 'the purpose of a system is what it does' is kind of stupid when you refer to systems which genuinely accomplish their stated purpose. The police catch most criminals. The subway transports a lot of people and most people who live in New York use the subway to get around. Duh. That both spend a lot of money doing dumb things as well('the purpose of the police is to idle their vehicles') is irrelevant. Duh.

But, when you get to organizations that don't do their stated purpose and instead choose to do other things, it becomes more reasonable. The purpose of NASA is firstly to make claims about global warming and secondly to explore space. The purpose of the public school system is primarily to put taxpayers on the hook for corrupt construction deals and secondly to pay staff, with educating kids a distant third. Both of these claims are debatable but they are not absurd. The purpose of a system is what it does is a statement referring to institutional capture. It's not a universal law.

The purpose of NASA is firstly to make claims about global warming and secondly to explore space.

You're more right than you know!

TITLE I — SHORT TITLE, DECLARATION OF POLICY, AND DEFINITIONS SHORT TITLE

Sec. 101. This act may be cited as the “National Aeronautics and Space Act of 1958”. DECLARATION OF POLICY AND PURPOSE

Sec. 102. (a) The Congress hereby declares that it is the policy of the United States that activities in space should be devoted to peaceful purposes for the benefit of all mankind.

(b) The Congress declares that the general welfare and security of the United States require that adequate provision be made for aeronautical and space activities. The Congress further declares that such activities shall be the responsibility of, and shall be directed by, a civilian agency exercising control over aeronautical and space activities sponsored by the United States, except that activities peculiar to or primarily associated with the development of weapons systems, military operations, or the defense of the United States (including the research and development necessary to make effective provision for the defense of the United States) shall be the responsibility of, and shall be directed by, the Department of Defense; and that determination as to which such agency has responsibility for and direction of any such activity shall be made by the President in conformity with section 201 (e).

(c) The aeronautical and space activities of the United States shall be conducted so as to contribute materially to one or more of the following objectives:

(1) The expansion of human knowledge of phenomena in the atmosphere and space;

(2) The improvement of the usefulness, performance, speed, safety, and efficiency of aeronautical and space vehicles;

...

https://www.nasa.gov/history/national-aeronautics-and-space-act-of-1958-unamended/

That no good, dirty, rotten commie... Dwight Eisenhower. ;)