Basically, (1) software licenses matter, if not not today then tomorrow, and (2) just because you think the language sounds clear doesn't mean that a judge will

Basically, (1) software licenses matter, if not not today then tomorrow, and (2) just because you think the language sounds clear doesn't mean that a judge will agree with you. You can also see this in the evolution of several licenses that have gone through more than one version. While I really hate comparing software to licenses, think of those as "bugfixes" (or perhaps, warnings to others of bad example licenses). I already gave GPLv1 and the original Artistic License as what not to do; Apache v1 is another example because of patents.