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- From: jmc@SAIL.Stanford.EDU (John McCarthy)
- Subject: Re: free Beyond the Limits program
- In-Reply-To: dean@vexcel.com's message of Mon, 14 Dec 1992 20:32:14 GMT
- Message-ID: <JMC.92Dec14134116@SAIL.Stanford.EDU>
- Sender: news@CSD-NewsHost.Stanford.EDU
- Reply-To: jmc@cs.Stanford.EDU
- Organization: Computer Science Department, Stanford University
- References: <JMC.92Dec13145900@SAIL.Stanford.EDU> <1992Dec14.162400.14555@vexcel.com>
- <JMC.92Dec14100718@SAIL.Stanford.EDU>
- <1992Dec14.203214.18031@vexcel.com>
- Date: 14 Dec 92 13:41:16
- Lines: 26
-
- In response to my question about the vertical axes of the graphs in _Limits to
- Growth_ being unlabelled Dingo offers the excuse:
-
- For the readers who haven't seen the graphs, each one
- contains quite a few curves, each corresponding to some
- aggregate measurement, such as population, industrial
- output, etc. To label a single graphs with a half dozen or
- so vertical axes would be quite crowded. Since each graph
- started in 1900, they included historical values so the
- future portion of the graph can be interpreted by comparing
- to the first part of the curve. To know the actual number,
- you would have to look up the actual value in a statistical
- abstract. I believe that some benchmarks were provided for
- this purpose for at least some of the curves, such as
- population, but I don't know if they were provided for all
- of the curves.
-
- We can indeed look up what the population was in 1900. Suppose
- we wanted to look up the amount of pollution in 1900, what would
- we do? Is it defined well enough to be meaningful, let alone
- look-up-able?
- --
- John McCarthy, Computer Science Department, Stanford, CA 94305
- *
- He who refuses to do arithmetic is doomed to talk nonsense.
-
-