- Our not wanting to die is a bit of irrational behavior selected for by evolution. The universe doesn’t care if you’re there or not. The contrasting idea that you are the universe is mystical, not rational.
- The idea that you are alive “now” but will be dead “later” is irrational. Time is just a persistent illusion according to relativistic physics. You are alive and dead, period.
- A cyber-replica is not you. If one were made and stood next to you, you would still not consent to be shot.
- Ditto a meat replica
- If you believe the many worlds model of quantum physics is true (Eliezer does), then there already are a vitually infinite number of replicas of you already, so why bother making another one?
Terminal values and preferences are not rational or irrational. They simply are your preferences. I want a pizza. If I get a pizza, that won't make me consent to get shot. I still want a pizza. There are a virtually infinite number of me that DO have a pizza. I still want a pizza. The pizza from a certain point of view won't exist, and neither will I, by the time I get to eat some of it. I still want a pizza, damn it.
Of course, if you think all of that is irrational, then by all means don't order the pizza. More for me."
"More generally, I'd like to figure out how to pierce this sort of argument in a way that makes the person in question actually change his mind."
Since you did post that letter about your Father trying to argue to you in a manner to try and have you change your mind, this raises alarms bells for me.
If both you and your Father is trying to change each others' minds, then there is a possibility that the argument can degenerate: both sides would only treat the other people's arguments as something to swat away, as opposed to something to seriously consider and take into account. If this occurs, then the argument would become futile, neither side will budge on this point, so no persuasion will occur.
That being said, if both you and your Father are arguing in good faith, then there is still a chance of someone being persuaded (either you or your Father). If neither are though, then no persuasion will occur and the argument is futile. Since I am unable to determine which is the case in your OP, I would request a clarification on this point.