Here's a forward of parts of an email I sent to Richard with comments on his and Ben's paper (sent me a pre-print off-list a couple of weeks ago):
One obvious comment is that the calculations do not take account of the CAMRAM approach of charging for introductions only. You mention this in the final para of conclusions as another possible.
We wanted to assess whether pure proof-of-work helps. CAMRAM and other approaches may well change the calculations, but they also introduce lots of complications.
It seems we now have hard figures to support the notion that proof-of-work cannot be a complete solution in itself. We will be making that clearer in a revision of the paper (and fixing some errors).
Cheers,
Ben.
-- http://www.apache-ssl.org/ben.html http://www.thebunker.net/
"There is no limit to what a man can do or how far he can go if he doesn't mind who gets the credit." - Robert Woodruff
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