## Neat Ratios ...

Lifespan of a cat (15 y)

- is 1/2000 of Time since first humans in Europe (30,000 y)...more
- is 1/2000 of Time since extinction of Neanderthals (30,000 y)...more
- is 1/2000 of Age of earliest sewing needle (30,000 y)...more
- is 1/2000 of Time since the earliest bread baking (30,000 y)...more
- is 1/1000 of Time since first humans in Americas (15,000 y)...more
- is 1/250 of Age of earliest swords (3,700 y)...more
- is 1/50 of Time since the birth of Dante Alighieri (757 y)...more
- is 1/25 of Time since the birth of Newton (379 y)...more
- is 1/25 of Duration of Mali Empire (375 y)...more
- is 1/5 of Period of Halley's Comet's orbit (75.3 y)...more
- is 1/5 of Time since the invention of the transistor (74 y)...more
- is 1/4 of Time since first human went into space (60 y)...more
- is 2/5 of Time since first Apple Macintosh Computer launched (38 y)...more
- is 1/2 of Lifespan of horse (30 y)...more
- is 1/2 of Period of Saturn's orbit (29.5 y)...more
- is about as big as Time since first iPhone launched (15 y)...more

If this was a standard unit ...