# Quantization, String Theory

**URL:** <https://discuss.criticalfallibilism.com/t/quantization-string-theory/494>\
**Category:** Unbounded\
**Created:** [January 26, 2022, 12:36am UTC](https://discuss.criticalfallibilism.com/t/quantization-string-theory/494 "2022-01-26T00:36:22Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![lmf](https://discuss.criticalfallibilism.com/user_avatar/discuss.criticalfallibilism.com/lmf/32/1302_2.png) [@lmf](https://discuss.criticalfallibilism.com/u/lmf)\
**Post date:** [January 29, 2022, 4:52pm UTC](https://discuss.criticalfallibilism.com/t/quantization-string-theory/494/3 "2022-01-29T16:52:26Z")

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> [@alanforr](#):
>
> Section 1 and the first four paragraphs of Section 2 explain the problem that DD is addressing.

Those parts of the paper are parts that I read, and I believe I understood what Deutsch wrote. I don’t see how any of it is a refutation of [this criticism](https://discuss.criticalfallibilism.com/t/career-physics-and-goals-was-artificial-general-intelligence-speculations/473/157) of the things Deutsch said in his speech.

> [@alanforr](#):
>
> a fully quantum mechanical theory would not include any quantities that are supposed to be measurable that are not represented by quantum observables, since all such quantities are actually quantum mechanical.

I think I agree with this.

What theories do you think include quantities that are supposed to be measurable but are not represented by quantum observables?

edit: I don’t think that classical fields are supposed to be measurable quantities in QFT, I think that they are a tool to get to the measurable quantities.

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