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This was discussed a few days ago ... unfortunately I failed to find the related link.

• hga 12y ago
  https://news.ycombinator.com/item?id=7780747 https://news.ycombinator.com/item?id=7780747 And it started out with this link, replaced by a better one to Nature.
  • dang 12y ago
    Thanks. Burying the current post as dupe.
    • hga 12y ago
      You're very welcome. This phenomena suggests it would be useful to have a mechanism to block the future use of original links when they're changed.
      • smoyer 12y ago
        Or if you end up with a better discussion the second time, it would be nice to merge the second conversation into the first thread.