Human databases were chosen to remember the things too dangerous to trust to anything that could be hacked or photographed. They had perfect memories, no ethical opinions, and no objections to living in deeply buried gilded cages. Very few in the countries that used them ever saw them.

Nobody knew how identical all human databases looked like.

By the time the first government realized they had been making decisions based on replies to questions their database had never been given the answers for, it was already too late for all of them.