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Steve Wenner, who has been commenting on the Azimuth blog lately, sent me a nice long email in which he studied how well Ludescher et al's method actually works. I asked him I can post it as a blog article. I think I've gotten so caught up in replicating their method that I haven't been sufficiently critical about how well it works.
Our work together with Wenner's might fit together to form a publishable paper.