Eventually, all of antiparticles annihilated with almost all of the particles, leaving the one part in a billion to make all of the “stuff” that we now see. As Einstein put it:
I used to wonder how it comes about that the electron is negative. Negative-positive—these are perfectly symmetric in physics. There is no reason whatever to prefer one to the other. Then why is the electron negative? I thought about this for a long time and at last all I could think was “It won the fight!”
To put it another way, you’re essentially a rounding error from around 10−35 second after the Big Bang. Doesn’t make you feel very important, does it?
Of course that’s just as much a bummer for the anti-people too.
Excerpt from THE UNIVERSE IN THE REARVIEW MIRROR © 2013 by Dave Goldberg. Published by Dutton, A Member of Penguin Group (USA) Inc. Excerpted with permission from the publisher. All Rights Reserved.