I gave a talk on Teleportation of Post-Selected States (and how do I know an entangled state is what I think it is) at the Foundations of Physics 2023 Conference in Bristol. The slides for the talk are below. This was an excellent conference organised by the philosophy of physics department which brought together physicists and philosophers to discuss the most topical questions in the foundations of physics. We covered subjects from quantum non-locality to quantum biology, from the meaning of time to the expansion of the universe. I look forward to the next edition, which will be in Poland in 2025.