Quantization, String Theory

[lmf]

@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 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.