2009/5/28 David Goodman dgoodmanny@gmail.com:
The solution, as with international affairs, is tolerance. In this case, the practical aceptance of all free licenses as equivalent, regardless of lthe licensing zealots. Free culture arose to permit reuse, and should continue that way. We should  simply have told the FSF:  At least when dealign with text, we regard all CC-BY licenses as compatible with each other and with GFDL, and therefore there's nothing that needs to be negotiated. Anyone who wants to use our content under any such license is welcome, and we will treat yours similarly, under the presumption that any court would regard the differences as insignificant.
Do you have any legal basis for that presumption?
Common sense, but depending on a federal court to consistently apply common sense is foolish. When they do it, it is to accommodate powerful political interests.
Fred