By Donella Meadows~
Indicators are natural, everywhere, part of everyone’s life. Intuitively we all use indicators to monitor complex systems we need to care about or control. We have many words for indicator – sign, system, omen, signal, tip, clue, grade, rank, data, pointer, dial, warning light, instrument, measurement. Indicators are a necessary part of the stream of information we use to understand the world, make decisions and plan our actions.
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