No one thinks of Microsoft Office as being open in any sense. So, if Microsoft is open, then Adobe’s Flash is almost as open, right? DaringFireball’s John Gruber:
Microsoft published the OOXML file format specs for its Office apps. And not only did they publish the specs, they submitted them to a widely-respected industry standards organization, and now they’re ISO standards.
Adobe’s Flash specs have never been submitted to a standards body, let alone accepted, thus, anyone who argues that Adobe Flash is open would agree that Microsoft Office is even more open.
Ergo, Flash ain’t open.