The third thing is I actually think the most serious problem and again it's distinctive to the question of a transformative experience where you're undergoing a life-changing experience that also changes like what you know. That goes back to this issue about diachronic decision making because if you have to make a choice about whether to undergo this life changing decision then you have to decide especially if in that context right now let's say you prefer not to become a vampire but all the testimony that you're getting or the vast majority of the testifiers that you're listening to tell you it's fabulous to become a vampires. The question is like what's the principled way is there a principle way to do this right