event · occurrence

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a change that occurs in a place during a time

Examples

• The 2011 Tōhoku earthquake shifted Japan's coastline by 4.4 meters and triggered a tsunami. geology
• The Heartbleed bug exposed OpenSSL memory contents for two years before it was patched. computing
• Halley's Comet appears every 76 years, last spotted in 1986 and expected next in 2061. astronomy

Emergence

Chain to foundations

Neighborhood

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

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Provenance