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MinibearRex comments on [SEQ RERUN] Reductionism - Less Wrong Discussion
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Comments (21)
True, let's say that I'd bet my house on it not being done in my lifetime.
Yes, in the HEP context.
Not quite. You can use renormalization to help explain some of what you observe at lower energies from a HE model point of view. I am yet to see an RNG prediction of a new low-energy effect, though I suppose it might happen for one-level-up problems, but not for any kind of multi-level jumps (do you seriously think that one can potentially renormalize quarks to cognitive biases?)
You are confusing predicting with explaining.
Are you saying that such a task would be prohibitively difficult, and presumably not something that is worth the effort, or are you saying that doing this is impossible in principle?
I don't think the renormalization group flow has anything to do with the topic, honestly.
It looked to me like the entire original post was about how you couldn't use lower level laws to extrapolate higher level laws. Renormalization is the only way I know of to do this. Additionally, every comment in this direct thread is about renormalization. I think renormalization is the topic.
Renormalization is a very specific technique, mostly used in HEP, to work around the infinities cropping up into the calculations. It does not let you predict anything about a lower-energy model from the higher-energy one, only to replace "bare" quantities with the renormalized ones.