If you heat up a magnet, it will lose its magnetism.
In 1945, Dwight D. Eisenhower predicted that people would try to dispel the holocaust as a falsehood, and ordered all possible photographs taken of the Nazi crimes to hinder any such attempts.
Where the Wild Things Are was supposed to have been about horses—but the illustrator couldn't draw them.
Martin Luther King Jr. had a C in public speaking.