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" Suppose you own a pond on which a water lily is growing. The lily plant doubles in size each day. If the lily were allowed to grow unchecked, it would completely cover the pond in 30 days, choking off the other forms of life in the water. For a long time... "
The Impact of Growth on the Environment, Hearings Before the Subcommittee on ... - Página 152
de United States. Congress. Senate. Committee on Public Works - 1973 - 158 páginas
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Environmental Quality

Council on Environmental Quality (U.S.) - 1972 - 494 páginas
...choking off the other forms of life in the water. .For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...covers half the pond. On what day will that be? On the 29th day, of course. You have 1 day to save your pond." The press of immediate problems sometimes forces...
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Growth and Its Implications for the Future: Hearing with Appendix for the ...

United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and the Environment - 1973 - 1532 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...day, of course. You have one day to save your pond.* It is useful to think of exponential growth in terms of doubling time, or the time it takes a growing...
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Growth and Its Implications for the Future: Hearing with Appendix, Ninety ...

United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and the Environment - 1973 - 1024 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...day, of course. You have one day to save your pond.* It is useful to think of exponential growth in terms of doubling time, or the time it takes a growing...
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Man Education and Society, the Year 2000: A Report of the 1974 Institute for ...

Grant Venn - 1976 - 162 páginas
...choking off the other forms of \\\ life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...twenty-ninth day, of course. You have one day to save the pond. 3. SYSTEMS Much of our education is spent in learning of facts, usually quantifiable. This...
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The Predicament of the Prosperous

Bruce C. Birch, Larry L. Rasmussen - 1978 - 220 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...day, of course. You have one day to save your pond." (Donella H. Meadows et al. The Limits to Growth [Universe Books, 1972], p. 29.) 10. The Washington...
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Public Values, Private Lands: Farmland Preservation Policy, 1933-1985

Tim Lehman - 1995 - 260 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...will that be? On the twenty-ninth day, of course. You will have one day to save your pond."90 The idea that resource consumption as well as population growth...
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Economic Growth and the Environment: An Empirical Analysis

Sander M. de Bruyn - 2000 - 266 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...day, of course. You have one day to save your pond". (Meadows et al. 1972, p. 29) In the early 1970s the report to the Club of Rome (Meadows et al., 1972)...
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More: The Politics of Economic Growth in Postwar America

Robert M. Collins - 2000 - 318 páginas
...days, choking off the other forms of life in the water. For a long time the lily plant seems small, and so you decide not to worry about cutting it back until...day, of course. You have one day to save your pond. 28 The message was clear: only prompt action could prevent catastrophe. The actual publication of the...
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Capitalism: As If the World Matters

Jonathon Porritt - 2005 - 353 páginas
...life in the water. For a long time the lily plant seems small, so you decide not to worry about it until it covers half the pond. On what day will that be? On the 29th day. You have just one day to act to save your pond. Source: Meadows et al (1992) As Paul Ekins...
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The International Handbook on Environmental Technology Management

Dora Marinova, David Annandale, John Phillimore - 2008 - 593 páginas
...life in the water. For a long time the lily plant seems small, so you decide not to worry about it until it covers half the pond. On what day will that be? (Meadows, 1992, p. 18) The answer is surprising on first encounter: on the 29th day. On the 30th day...
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