If you would like to be horrified, represent the number of deaths from WWII in unary in a text document and scroll through it (by copy pasting larger and larger chunks, or by some other method).
There are about 4000 "1" characters in a page in MS Word, so at 20 million battle deaths, you'll get about 5000 pages.
If you really want to be horrified, make a document with one "I" for every sentient being whose life would be prevented from an existential catastrophe. Oh wait, that's too many to store in memory...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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