Quote:
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Quote by: Gregory I was riding in the car and the topic of time travel came up and the question was posed: "If the US launched a nuke to go back in time and bomb the nuke site one hour before it was supposed to launch, what would happen?"
What do you think would happen? |
The answer lies in parallel realities.
Here is the chain of events:
1) The missle is launched.
2) In mid air it engages some time travel machine and disappears from the reality that it was in when it launched. It is now completely gone forever. The mass from the missle and everything inside is forever gone from the reality it launched in.
Note that the total mass of all parallel realities is constant, so conservation of mass still works. Just not localized to one reality.
3) The missle arrives mid air at a new reality that is an exact copy of the missle's originating reality except it's 1 hour earlier and now it has this missle in mid air. There are now 2 copies of this missle in this reality and none in the originating reality.
4) The missle strikes the launch site destroying the unlaunched missle and the site completely.
From the POV of the originating reality, it would look like a missle was launched and this it simply disappeared in mid air. That would be it. They would feel no effect from the missle disappear nor any effect from any events caused by the missle in any parallel reality.
From the POV of the 2nd reality, it would look like a missle all of a sudden appeared in mid air and struck the launch site where an exact copy of the missle was sitting ready to be launched in an hour.