IBM's Dark Secret Past
As some of you computer nerds know, IBM played a huge role in creating some of the first major computers in the 20th century. They were the ones who first pioneered those room-sized machines that could do complex calculations, the very machines that put people on the moon, and were the ancestors of the computers we use now.
What many people don't know is that IBM secretly sold some of their earliest models to the Germans in the 1930s, I'm guessing because the Germans were paying a pretty penny for those things, and IBM wasn't aware of what their customers were actually doing with those machines.
That's why the Nazi govt. was able to get information on their citizens so fast, particularly when it came to Jewish ancestry and affiliation. They were essentially using American computers to crunch the data. And Germans are nothing if not meticulous when it comes to taking down records on things.