In 1850, the population of the world was 1.2 billion. When I was born, it was 3.6 billion. Currently, it is 7.7 billion.
In the same way, in 1850, the population of the United States was 23.2 million. When I was born, it was 203.2 million. It is now 327.1 million.
Each one of those additional human beings is doing something: creating, working, interacting with others. Each human creates information.
So if it was difficult to know even a representative sample of all the information world in 1860, it must be proportionally more difficult now.
This is a problem for education. To educate a young human being, to ensure they have the information and skills necessary to grapple with the world, is difficult enough. The degree of difficulty increases with the total amount of information existing. We can expect the challenge of education in our society to only intensify.