You're looking at Less Wrong's discussion board. This includes all posts, including those that haven't been promoted to the front page yet. For more information, see About Less Wrong.

DanielLC comments on Open thread, Jan. 19 - Jan. 25, 2015 - Less Wrong Discussion

3 Post author: Gondolinian 19 January 2015 12:04AM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (302)

You are viewing a single comment's thread. Show more comments above.

Comment author: passive_fist 19 January 2015 05:19:50AM 1 point [-]

I'm going to disagree with you here. Not that energy doesn't depend on our models. It just depends on them in a very different way. The entropy of a physical system is the Shannon entropy of its distribution of 'microstates'. But there is no distribution of microstates 'out there'. It's a construction that purely exists in our models. Whereas energy does exist 'out there'. It's true that no absolute value can be given for energy and that it's relative, but in a way energy is far more 'real' than entropy.

Comment author: DanielLC 19 January 2015 06:50:01AM 1 point [-]

Potential energy depends on what you set the zero level to, but I agree that this is very different than entropy. In particular, the difference in energy between two systems is well-defined.