OT - Physics Question on Anti-Matter

[Spoo]

Randallw said:
I just ended up thinking about entropy.

I wondered how you could make a profit because to get the energy out you have to spend energy to make the AM. But then the Positive matter has already been made so you only need to make half of it. From there I started thinking about Fusion power where you get the energy out of sea water because the energy was placed into it at the beginning of time or whatever. From there I ended up considering mining sunlight from a star, but that's not infinite either. Eventually even the star will die. So clearly there is no such thing as an infinite energy source. It makes a clear argument for entropy. One day the universe will die. In about a billion years we might flee to another universe, but clearly even that will die. Which is more disturbing, that everything will die eventually or that I am getting depressed about soemthing that won't happen for maybe 14 billion years

This reminds me of a short story by Isaac Asimov, The Last Question.

[Randallw]

hmm, a pretty obvious conclusion.

I can recall 2 stories such as that one. In one a man in a bar is asked how might a robot live forever and they talk about how it would have to upgrade every once in a while but yes it could last forever. The end of the story lingers over one mans young companion.

Another story that comes to mind is after a war where a computer ran everything some men ask its caretaker if it was unable to solve a problem. He answers that he would then flip a coin to decide.