I want to have a world, in which my grandfather is not dead yet, and certain friends are alive.

It is impossible to avoid their death without distorting the future. For example, if my grandfather would have been alive throughout the past >20 years, then, in all likelihood, I would be a different kind of person than I am today, because that would have certainly influenced my choices in life.

So, assuming that I want to retain my this self, there is a possibility to do that:

A merge world would be a world constructed by importing the subjects as information from multiple parallel histories, into a new world, which inherits (just like in programming, multiple- inheritance) from a set of chosen worlds.

To create a merge world, we would:

1. Regenerate the current timeline by simulating universe exactly like ours until a time t = now.

2. During that process, take snapshots of objects.

3. Instantiate a new world with the objects from snapshots.
-- Mindey, Aug 19 2015

I'm sorry about your friends, but I think that in order to avoid the "magic" portion of the help file you may need to go into more detail about how the merge world technology that makes this possible actually works.
-- normzone, Aug 19 2015


I create backup copies of myself daily in the case of such an atrocity. Doesn't everyone?
-- RayfordSteele, Aug 19 2015


// I create backup copies of myself daily in the case of such an atrocity. Doesn't everyone? //

Some day it will be the default, just like it currently is with software development.
-- Mindey, Aug 19 2015



random, halfbakery