Is That A Big Number?

If Time since first domestication of horses (5,500 y) was a standard unit ...

Time since the emergence of earliest humans (2.8 million y)...more would be 500 x Time since first domestication of horses

Time since the start of the last glacial period (Ice Age) (110,000 y)...more would be 20 x Time since first domestication of horses

Time since first domestication of dogs (27,000 y)...more would be 5 x Time since first domestication of horses

Time since the birth of Albrecht Durer (553 y)...more would be 1/10 of Time since first domestication of horses

Time since the birth of Copernicus (550 y)...more would be 1/10 of Time since first domestication of horses

Time since the Caxton's first edition of Chaucer's The Canterbury Tales (548 y)...more would be 1/10 of Time since first domestication of horses

Time since the birth of Turing (112 y)...more would be 1/50 of Time since first domestication of horses

Time since the first fixed wing scheduled air service (110 y)...more would be 1/50 of Time since first domestication of horses

Time since the first human walked on the moon (55 y)...more would be 1/100 of Time since first domestication of horses

Time since first Boeing 747 entering service (54 y)...more would be 1/100 of Time since first domestication of horses

Yes, there's now a book based on these numbers. Oxford University Press: July 2018.