Hard sciences, I think, are based on the correspondence theory of truth – their statements are tested by whether or not they correspond to what's observed in wh

Hard sciences, I think, are based on the correspondence theory of truth – their statements are tested by whether or not they correspond to what's observed in what's believed to be reality. I realise that for some sciences, such as physics, it's becoming increasingly difficult, with such proposals as string theory or many-world theory. I don't know how much of a reality, apart from physical artifacts, there is in historical science.