Page history
February 8, 2015
no edit summary
m−35
no edit summary
+415
Tier 4 is defined by actually viable space travel (see talk); in practice we're still in Tier 5. In general none of the tiers are evidently measured through singular inventions or events as they all include more than one technology as their criteria.
−345
February 4, 2015
→Tier 1: World Builders
+148
→Tier 3: Space-Faring
+96
→Tier 4: Space Age
+4
→Tier 4: Space Age
+88
→Tier 6: Industrial Age
+78
December 17, 2014
June 30, 2014
June 22, 2014
February 17, 2014
August 25, 2013
August 23, 2013
→Tier 4: Space Age: I'm sorry but the example just doesn't make any sense to me considering the traits. See See talk page
m+113
→Sources
m+175
August 22, 2013
No, the Space Age officially began with the launch of Sputnik I in October 1957. That's when humanity entered Tier 4.
−15
no edit summary
+15
June 30, 2013
June 29, 2013
January 2, 2013
December 13, 2012
November 21, 2012
November 20, 2012
September 20, 2012
August 26, 2012
July 16, 2012
January 16, 2012
January 15, 2012
January 14, 2012
December 30, 2011
September 11, 2011
July 4, 2011
June 17, 2011
June 8, 2011
June 1, 2011
IP was correct
m−187
Undo revision 922714 by 24.151.30.174 (talk) It's still notable
+16
Undo revision 922715 by 24.151.30.174 (talk)
+142
→Tier 2: Interstellar
−142
→Tier 1: World Builders
−16