Jump to content

User:Widefox/timescales

From Wikipedia, the free encyclopedia

Timescales that may affect content in Wikipedia come from external and internal factors:

External timescales
Years Period
0 WP:NOTNEWS
1 WP:RECENTISM
2 WP:SECONDARY SOURCE[1]
10 Small business lifespan[2]
15 Large public company lifespan[3]
20 Patent
40 Declassification[4]
80 Human life expectancy[5]
115 Copyright term[6]

The longevity of internal factors:

See also

[edit]

Notes

[edit]
  1. ^ Wikipedia:Identifying and using primary sources#Secondary sources for notability
  2. ^ 51% of small businesses are less than 10 years old [1]
  3. ^ Average S&P 500 company lifespan [2]
  4. ^ of primary sources. The actual term depends on several factors. US various: 10, 25, 50, 75, UK various: Twenty-year rule Thirty-year rule
  5. ^ WP:BLP
  6. ^ The actual term depends on several factors. In this hypothetical example an author creates their works at age 35 and lives for 80 years (human life expectancy), for actual details see WP:COPYOTHERS and
    Expansion of U.S. copyright term. This worked example shows how the term varies over time for an author that creates their work at age 35 and lives for 70 years.
  7. ^ Average link lifespan of ~100 days [3]