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The block of ice is not of unknown configuration. The block of ice in my example is at 0 K, which means it has zero entropy (all molecules rigidly locked in a regular periodic lattice) and thus its configuration is completely known.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Previous Open Thread
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.