[darcs-users] darcs patch: relicense Darcs.Commands.GZCRCs as BSD3

Stephen J. Turnbull stephen at xemacs.org
Tue Sep 22 03:06:28 UTC 2009

Gwern Branwen writes:

 > 1. Any copyrighted work can be represented as a number, x

Starting from a false premise, of course you can derive a

A copyrighted work is not a mathematically defined entity, like the
current definition of the meter in terms of the number of wavelengths
of light emitted by a specific electron state transition.  It is
defined with reference to a unique physical embodiment, as in the
original definition of the meter as the distance between two scratch
marks on a particular bar of platinum-iridium alloy in a vault in

The scope of copyright is the transitive closure of works created by
copying (in a fuzzy but well-defined sense) or performing the
copyrightable portions of that original work.

[1]  The scope of a patent, on the other hand, includes any physical
entity that embodies the description presented in the patent, whether
or not it is a copy.

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