Humans are terrible at numbers. You can easily see a difference between one apple and four apples, but what about 1000, 10000, 100000, etc? It becomes more and more difficult. To understand history and current events better, it is good to put numbers in perspective.
Source: Infographic Video Smashes Home the Shocking Losses of World War Two
Thanks to Jae for indirectly helping me discover this website by tweeting about the Battle of Kursk.