Time since first domestication of cats

Time since first domestication of cats (10,500 y)

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Time since first domestication of cats (10,500 y)

is 1/250 of Age of earliest stone hand axe (2.6 million y)...more
is 1/250 of Time since the end of the Neogene geologic period (2.58 million y)...more
is 1/4 of Age of oldest musical instrument (42,000 y)...more
is about as big as Time since first domestication of cattle (10,500 y)...more
is 2 x Time since the start of the Bronze Age (5,300 y)...more
is 2 x Age of oldest wooden wheel (5,150 y)...more
is 4 x Time since the birth of Pythagoras (2,594 y)...more
is 5 x Time since the birth of Julius Caesar (2,120 y)...more
is 5 x Time since the birth of Cleopatra (2,090 y)...more
is 25 x Time since Shakespeare's play Hamlet was written (425 y)...more
is 25 x Time since the birth of Pierre de Fermat (423 y)...more
is 50 x Time since the birth of Dickens (212 y)...more
is 50 x Time since the birth of Ada Lovelace (209 y)...more
is 50 x Time since the birth of mathematician Maria Gaetana Agnesi (206 y)...more
is 100 x Time since the birth of chemist Rosalind Franklin (104 y)...more
is 200 x Time since first email sent (53 y)...more
is 200 x Time since the launch of Intel's first microprocessor, the 4004 (53 y)...more

If this was a standard unit ...