equivalent-as-far-as-you-can-tell
Based on what information? If I compute a state that will evolve into a low entropy state and then forget that information about it and base my calculation of entropy on its temperature, pressure etc. then I'll have a high entropy state that evolves into a low entropy one. Indeed "entropy (based on some macro-scale parameters)" seems to be what people mean when they say "entropy".
Today's post, Timeless Causality was originally published on 29 May 2008. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was Timeless Beauty, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
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