
There are no separate systems. The world is a continuum. Where to draw a boundary around a system depends on the purpose of the discussion.
Donella H. Meadows
Tags:
sept
19
2018

There are no separate systems. The world is a continuum. Where to draw a boundary around a system depends on the purpose of the discussion.
Donella H. Meadows
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I am an old man and have known a great many troubles, but most of them never happened. Mark Twain |
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