You would have no idea what to do, where to go, how to behave. A society without history is like a person with no memory. Not knowing how we got to where we are, we would have no idea where we might be going. Studying history introduces you to the way we make the collective memory of the human race. This is not so easy.
Memory can play tricks.
Sorting out the true from the false requires careful sifting of evidence. It is even more difficult to uncover the deep causes of events like the French Revolution, the First World War or the fall of Communism. The study of history at university level introduces you to the complexities involved in these exciting pursuits. Writing history requires you to use your imagination as well as your reason. It also pits your interpretation against those reached by other students.