issue · problem

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a thing that is different from a previous state

Examples

• The 2011 Fukushima nuclear reactor meltdown released cesium-137 into the Pacific Ocean, altering marine sediment composition for decades. environment
• The 2008 collapse of Lehman Brothers triggered a global credit freeze, disrupting interbank lending markets within hours. economics
• The Hubble Space Telescope's primary mirror, ground to the wrong shape in 1990, produced blurred images until corrected in 1993. engineering

Emergence

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Neighborhood

Concepts that depend on this one above; what it is built from below.

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Provenance