Matt Asay says the Wall Street Journal is calling on Microsoft to open source Windows, and not surprisingly, he loves the thought. On the other hand, Dana Blankenhorn's response to the idea of open source Windows is, "When pigs fly." The latter is more likely the case, simply because Windows is Microsoft's flagship product. Given the company's extreme resistance to open source in the past, it'll take a lot for its leaders to do an about face. Another point, of course, is that the WSJ writer asks for Windows source code to be made available for inspection. Because Microsoft has made progress lately on making Windows more interoperable with open source apps, making the copy-protected code available for inspection may be doable eventually. But that's a far cry from true open source code.