Originally Posted by phx
I was also under the impression that making my sources public domain would be pretty clear to everybody. The header of each single file says:
* I, the copyright holder of this work, hereby release it into the
* public domain. This applies worldwide.
Isn't that as clear as a license? Why can't that be seen as a license?
Because public domain isn't defined worldwide
And there are varying interpretations of it in places where it is defined.
In many places one can't simply give away the copyright in an open contract (which is what a licence text is).
Also at least in theory you may be sued for bugs or incomplete implementations etc. This is mostly an issue in the US but still...