- 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."
Let me respond to each point that your dad offers:
Others have questioned the use of the term rationality here, which is a good point to make. In my mind, there's a plausible distinction between rationality and wisdom, such that rationality is mastery of the means and wisdom is mastery of the ends (the definition of rationality offered on this site, of systemized winning, supports this--it isn't elaborated on what you should win, and on whether you shouldn't win one thing rather than another thing) . The above suggests to me, by analogy, that it would be irrational to eat when you're hungry, since hunger is an evolutionary bias. Given that hunger has produced in you the desire to eat, all else being equal, it is rational to eat. Similarly, all else being equal, if you fear death--live. But there are cases where other desires have greater priority.
Also, it is mystical to say that we are the universe, but not mystical to say that we are part of the universe. Nature itself seems indifferent and apathetic about our desires and needs, but given that we are natural beings, it must be true that our desires and needs are a part of nature. Even if immortality was an option for all of us, it might the case that another desire, for instance our love for another being, makes it more important that we die rather than live. But I think this calculus of ends belongs to wisdom and not rationality; rationality prescribes the best way to die, given that it is best to die. Sometimes dieing is winning.
Does relativity really say that time is an illusion? I think the proposition that the duration of an interval time is relative to one's frame of reference isn't the same as claiming that "time is just a persistent illusion". When I fear my own death, I don't care about other frames of reference, only my own.
Truth.
This is a different argument, that we are already effectively immortal. The desire for immortality should have already been satisfied. But obviously, our desire for immortality has not been satisfied, otherwise we wouldn't still desire it. Similarly, making another replica of myself wouldn't satisfy my desire for immortality, unless I thought it was me by some kind of a hive mind with my replicas. This is clearly not the case between quantum worlds. Therefore, we are not effectively immortal.