But semantics is half the fun. But okay I agree with you but I believe we should never be truly absolute only absolute till otherwise. This flexibility allows us to change and adapt. For instance, All knowledge about the Heat death of universal is what we know not what we know in the future. Is Heat death correct probably yes but then again it could be wrong in the future by how much who knows? it could just very well be a small miss calculation that doesn't change the outcome or something big which changes our knowledge about it. we only know present knowledge, not future knowledge. we can only make educated guesses.