Time since first Apple Macintosh Computer launched

Time since first Apple Macintosh Computer launched (38 y)

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Neat Ratios ...

Time since first Apple Macintosh Computer launched (38 y)

is 1/400 of Time since first humans in Americas (15,000 y)...more
is 1/50 of Time since the peak of Roman Empire (1,900 y)...more
is 1/20 of Time since the birth of Marco Polo (768 y)...more
is 1/20 of Time since the birth of Dante Alighieri (757 y)...more
is 1/10 of Time since the birth of Newton (379 y)...more
is 1/5 of Lifespan of Galapagos giant tortoise (190 y)...more
is 1/4 of Time since the publication of Volume 1 of Marx's Das Kapital (155 y)...more
is 1/4 of Time since the birth of physicist Marie Curie (155 y)...more
is 2/5 of Time since Charles Lindbergh first flew across the Atlantic (95 y)...more
is 1/2 of Period of Halley's Comet's orbit (75.3 y)...more
is 2.5 x Time since first iPhone launched (15 y)...more
is 2.5 x Lifespan of a cat (15 y)...more
is 20 x Period of Mars's orbit (1.88 y)...more

If this was a standard unit ...