Fine tuning Intelligent Design

Sabine Hossenfelder asks, why do we think antimatter asymmetry is a problem?

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Hossenfelder thinks that the difference between matter and antimatter that enables the universe to be more than just radiation is made-up problem:

Because physicists make a living from solving problems, so they have an incentive to create problems where there aren’t any. For anti-matter this works as follows. You can calculate that to correctly obtain the amount of radiation and matter we see today, the early universe must have contained just a tiny little bit more matter than anti-matter. A tiny little bit means a ratio of about 1.0000000001.

If it had been exactly one, there’d be only radiation left. But it wasn’t exactly one, so today there’s us.

Particle physicists now claim that the ratio should have been 1 exactly. That’s because for some reason they believe that this number is somehow better than the number which actually describes our observations. Why? I don’t know. Remember that none of our theories can actually predict this number one way or another. But once you insist that the ratio was actually one, you have to come up with a mechanism for how it ended up not being one. And then you can publish papers with all kinds of complicated solutions to the problem which you just created.

Sabine Hossenfelder, “Where is the anti-matter?” at BackRe(Action) (December 4, 2021)

Isn’t she overlooking something? Why shouldn’t it have been one exactly? Are we trying to avoid something here? Why do so many asymmetries lead to our existence?

2 Replies to “Sabine Hossenfelder asks, why do we think antimatter asymmetry is a problem?

  1. 1

    This is just a variation on Sabine’s answer to the Fine Tuning Problem in Cosmology.
    If you only experience one value, how can you come up with a theory about the distribution? If the matter outnumbers the anti-matter, how do we come up with a theory that says it should be otherwise?
    But I think there’s a subtle difference between the two kinds of arguments. FTA says the universe was created with a certain constant. The “why” isn’t about the origin of that constant, there was never a time “before” to talk about. However, in the case of antimatter, there was a time “before”, and it is the transition from “before” to “now” that intrigues us. It is a question of “becoming” unlike the FTA which is a problem of existence.

  2. 2
    News says:

    So, Robert Sheldon at 1, would it be fair to say that that is what she is overlooking?

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