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Live Long Or Wide?
One of my favorite science fiction novels is Kiln People, by David Brin in 2003. Not so much for its characters or plot, but because it takes an interesting future/tech scenario seriously. Most fiction with artificial intelligence describes a world with only a few of them, yet one of AI’s most important features is its easy of copying.
In Kiln People, Brin takes seriously this idea of cheaply copying intelligent agents. The key assumption is that in a few minutes and for a modest cost one can copy a person’s mind into a new clay body that lasts about a day. That copy’s memories of its day can also be added back into the original at the day’s end. Brin imagines many details of how this would change society. While he gets some things wrong, and an economist would get more right, Brin does far better than most science fiction.
Assume for the sake of argument that you came to accept that such clay copies really were “you.” So that if on Monday you made six copies and merged them all back in at the end of Monday, and then you slept the rest of the week, you would have lived just as much as an ordinary person in a normal week. You’d remember having lived for seven days that week.
Now imagine that this copy technology is improved let copies last ten years. Then compare two ways to stretch your life:
Time Stretched Life: You are able to live for another 110 years before dying.
Space Stretched Life: You make nine copies now, and the ten of you live for ten years. Then you merge the memories of all these copies back together, and live for another ten years before dying.
I suspect most people would admire the life stretched across time more than the life stretched across space, similar to the way most people admire a time stretched civilization more than a space stretched one, and to the way they accept time genocide more than space genocide. I again attribute this to the future seeming more far:
The far future seems more far … than situations far away in space, or in the far past. The near/far distinction was first noticed in how people treated the future differently, and our knowing especially little detail about the future makes it especially easy to slip into abstract thought about the future. … We are less practical, more idealistic, and more uncompromising in far mode.
Added 8a: The time stretched life lets you see more of human history, but the space stretched life lets you help yourself more (e.g., the ten of you could start a business together), is better able to prevent your death, and trades later for earlier decades of your life cycle. As most people seem to discount the future and to prefer earlier life decades, these factors seem to favor space-stretching overall.