One particular way that geospatial information density can increase is by animating it, adding time as another dimension of visualization. Just as a map can make one inch equal one mile, an animated time line can make one second equal one year. A simple combination of an animated map and a time line can create a powerful narrative without any text at all. A brilliant example of this is Isao Hashimoto’s animated map of the 2,053 nuclear explosions between 1945 and 1998, which dramatically narrates the contours of the nuclear age.[11] Aside from the title, there is no background information associated with the animation. The only text in the piece is in the legend, which emerges as each new nuclear power first explodes a device. Sound, not words, is used as a second way of highlighting the data points. Yet, despite the absence of background information text, almost anyone watching the animation will come away with a deep understanding of the key features of the nuclear age. Only a modest background knowledge (such as knowing who the main antagonists in the Cold War were) makes the presentation of what might seem dry factoids not only informative but moving.
Hashimoto's piece is as powerful and informative as the author suggests.