autocatalytic sets used to provide a formal theory of emergence arxiv.org/abs/1205.0584
US population distribution by age 1950-2050 beacheconomist.com/popdis3.g…
So, did 'meter' change its meaning throughout the redefinitions from the late 18th century through the late 20th century?
In 1960, a meter was redefined as the length of 1,650,763.73 wavelengths of the orange-red emission line of Krypton-86 in a vacuum.
In 1889, a meter was redefined as the length of the international prototype meter bar made of platinum and iridium.
First step toward a Dyson sphere. phys.org/news/2012-04-satell…
I doubt that I'll wish I'd read more top five lists--http://www.inspirationandchai.com/Regrets-of-the-Dying.html
TIL about the Alcubierre metric--the only legitimate proposal for a warp drive based on Einstein's field equations. en.wikipedia.org/wiki/Alcubi…
