The main counter-argument to the idea that there is limited space is that in the future, if humanity ever progresses to the point that revival is possible, then we will almost certainly not have the same space constraints we do now. For example, this may be because of whole brain emulation and/or because we have become a multi-planetary species. Many people, myself included, think that there is a high likelihood this will happen in the next century or sooner: https://www.cold-takes.com/most-important-century/
There is also an argument that we actually do not have limited space or resources on the planet now. For example, this was explained by Julian Simon: https://en.wikipedia.org/wiki/The_Ultimate_Resource. But that is a little bit more controversial and not necessary to posit for the sake of counter-argument, in my opinion.
A related question is: what is the point of (a) extending an existing’s person’s life when you could just (b) create a new person instead? I think (a) is much better than (b), because I what I described as “the psychological and relational harms caused by involuntary death” in the post. But others might disagree; it depends on whether they think that humans are replaceable or not.
Thanks for the kind feedback!
The main counter-argument to the idea that there is limited space is that in the future, if humanity ever progresses to the point that revival is possible, then we will almost certainly not have the same space constraints we do now. For example, this may be because of whole brain emulation and/or because we have become a multi-planetary species. Many people, myself included, think that there is a high likelihood this will happen in the next century or sooner: https://www.cold-takes.com/most-important-century/
There is also an argument that we actually do not have limited space or resources on the planet now. For example, this was explained by Julian Simon: https://en.wikipedia.org/wiki/The_Ultimate_Resource. But that is a little bit more controversial and not necessary to posit for the sake of counter-argument, in my opinion.
A related question is: what is the point of (a) extending an existing’s person’s life when you could just (b) create a new person instead? I think (a) is much better than (b), because I what I described as “the psychological and relational harms caused by involuntary death” in the post. But others might disagree; it depends on whether they think that humans are replaceable or not.
There is also a discussion about this on r/slatestarcodex that you might be interested in: https://www.reddit.com/r/slatestarcodex/comments/tk2krv/brain_preservation_to_prevent_involuntary_death_a/i1o2s1d/