ry to be true there cannot even be the smallest bit of doubt, in the smallest bit of information which is part of the theory. The problem with theories is they attempt to claim too much. There is too much room for error in theories for them to be considered true. I agree with Ian Hacking who is an Entity Realist. Entity realists believe in things, but not theories. The entity realist believes that you should believe in the existence of an entity ‘E’ referred to by a term ‘E’ just in case our understanding of ‘E’ allows to successfully construct instruments that manipulate and use the world in a variety of diverse contexts and structures. Entity realists do not believe that entities are true because there is no clear definition of true. Anti-realists have no argument against entity realists, because entity realism attempts to shoot down theories. ...