#### exchemist

**Valued Senior Member**

I've described - a bit loosely, I admit - what thermodynamic entropy is, earlier in the thread. It is not about what a given observer can see. It is about the distribution of energy among the microstates of the system. https://en.wikipedia.org/wiki/Microstate_(statistical_mechanics)So not knowing the state of particles inside an horizon, doesn't "affect" entropy? I can't really parse that.

If you know the surface temperature of a solid body, what do you know about the internal temperature?

Boltzman's formula for entropy is S=k lnW, in which W is the number of states available.

The Hawking quotation you give in post 20 (for which you have not given a source - it would be useful if you could do that) is consistent with this.

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