On 4/1/2013 11:41 AM, kpn...@pobox.com wrote:
Copyright covers expressions of ideas. It does not cover the ideas themselves.
You can't copyright a concept, you can't copyright filesystems, and I
believe in the past few years a high court in the EU ruled that you can't
copyright a programming language. None of the things mentioned above are
covered by copyright.
Copyright would cover the implementations of these things. That's why it
was necessary to reimplement much of BSD.
Here's where it gets annoying, copyrights cover implementations, and
patents can cover the ideas. A lot of patents use an "on a computer"
line to get it called an invention instead of an math equation.
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