use of the kernel and licensing

[Joshua Isom]

On 4/1/2013 11:41 AM, kpneal at 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.