If the entire history of earth was summed up in 24 hours, how long will humans have occupied the planet?
Interesting question on scaling! Earth has history for 4.6 billion years. Humans (as Homo Sapiens) have history for 0.2 million years. Against 24 h Earth;s history, this is 3.76 s..
In hours, the answer is 24 X (2.E+05/4.6E+09) = 1,04348 h. Converting to seconds, it is 3.76 s..