Elektroschock writes "Stephane Rodriguez, a reengineering specialist who became popular for his article on MS Office 2007 binary data, now comprehensively debunks Microsoft's new Open XML format. With small case studies he demonstrates the impossible challenges third-party developers will face. His conclusion: it is 'defective by design.' Next week members of the International Standard Organization are likely to approve the format as a second official ISO standard for office documents, even though most nations have submitted comments. Rodriguez claims he is 'not affiliated to any pro-MS or anti-MS party/org[anization]/ass[ociation].'"