The average life expectancy around the world, according to Our World In Data (great website btw. A lot of cool data about our world visualized in a very intuitive way), is about 70 years. To find the average age at which we properly learn to read was more difficult because there is a lot of different opinions on this, but reading and comparing several “sources”, I came up with the age of 6, which “coincidentally” gives us a total of 64 (a stack of) years to read a book. This gives us (64*365*24*60=) 33’638’400 total minutes a human has to live, from the age they can read.