I do this exercise often...(as I ponder on why school children are not taught as much about time & perspective as we were 50-60 years ago.)

95% of the drugs we use these days did not exist when I was born.(1939)
The first tests of television were happening about the time I was born..(but it was not available to ME until 1953)

My father remembered the first automobile he saw: a White Steamer, bought by the town doctor...about 1914.

I have been alive for 1/3 of the existence of my country.

We have only existed as a reasonably 'human' species that drew pictures and made artifacts for about 35,000 to 50,000 years. There were 5-8 MILLION years of evolution before that....and we wonder why there are still genetic tendencies for men to fight and kill for territory, women and power?