Quantum Field Theory

Quantum field theory is said to be incomplete. What are the big remaining mysteries about it? You know, it really depends what you subscribe to. If you're a physicist and you want to compute this number, g minus two, there's nothing incomplete about quantum field theory. When the experiment gets better, you know, we calculate and we do better. And somehow with quanton field theory, i feel that younoug it's been so long, and ther has been so little progress, maybe we're thinking about it incorrectly.