Moreover, Robert Denning of Southern New Hampshire University quoted that knowing the past, as well as how past events affect people differently, can create empathy for other people in the present that have different opinions regarding their social and financial classes or groups. It is said that each one of them might have a history that may differ from the mainstream. Denning is also convinced that historians believe that knowing the past can tell us what to do and avoid in the present, although they say having the exact circumstances rarely happens that is why these circumstances are most likely to have different analogies from the past