With regards to what has been said, the GPLv2 gives the end user the right to 
both modify the software and, if certain conditions are met, distribute the 
software. It does NOT change the fact that all the contributors actually own 
the copyright on the software, or it appears in FlightGears' case, a lot of 
different people own the copyright to the software. 

In either case we need a system where we either start tracking who owns what 
copyrights in different parts of the software, or assigning the copyright to 
FlightGear while ensuring the contributors have all the rights they would 
otherwise have.

The reason for this, which I didn't state, is so we are better prepared to 
protect our software from people who may violate the GPL down the distribution 
line. If someone modifies FlightGear and obfuscates the copyright, that's a 
clear violation of the GPL - copyrights must be intact under the license.

Now, let's say someone takes parts of the FG source code for inclusion in a 
proprietary, closed-source product, and the copyright is NOT consolidated. 
Let's assume I track down the problem - now I have to track down the copyright 
holder of the code which was used in that piece of software and get them to 
enforce their own license. Not everyone would be willing to do that.

If everyone consolidates their copyrights under FlightGear, that violation is 
much easier to enforce. However, "FlightGear" would need to be a legal entity 
in this case. I'm not sure how to do that, but I can do the research.

If you'd like a read, check section 2.3:
http://www.softwarefreedom.org/resources/2008/foss-primer.html#x1-70002.2.1

Cheers
John

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