Is That A Big Number?

If Time since first humans in Americas (15,000 y) was a standard unit ...

Time since the earliest primates (75 million y)...more would be 5000 x Time since first humans in Americas

Time since first humans in Europe (30,000 y)...more would be 2 x Time since first humans in Americas

Time since extinction of Neanderthals (30,000 y)...more would be 2 x Time since first humans in Americas

Age of earliest sewing needle (30,000 y)...more would be 2 x Time since first humans in Americas

Time since the earliest bread baking (30,000 y)...more would be 2 x Time since first humans in Americas

Age of earliest swords (3,700 y)...more would be 1/4 of Time since first humans in Americas

Time since the birth of Dante Alighieri (757 y)...more would be 1/20 of Time since first humans in Americas

Time since the birth of Newton (379 y)...more would be 1/40 of Time since first humans in Americas

Period of Halley's Comet's orbit (75.3 y)...more would be 1/200 of Time since first humans in Americas

Time since the invention of the transistor (74 y)...more would be 1/200 of Time since first humans in Americas

Time since first human went into space (60 y)...more would be 1/250 of Time since first humans in Americas

Time since first Apple Macintosh Computer launched (38 y)...more would be 1/400 of Time since first humans in Americas

Lifespan of horse (30 y)...more would be 1/500 of Time since first humans in Americas

Period of Saturn's orbit (29.5 y)...more would be 1/500 of Time since first humans in Americas

Time since first iPhone launched (15 y)...more would be 1/1000 of Time since first humans in Americas

Lifespan of a cat (15 y)...more would be 1/1000 of Time since first humans in Americas