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Microsoft ( MSFT ) is no stranger to criticism these days, and the company s new Windows 8 platform is once again the target of a scathing review from a high-profile user. Well-known Internet entrepreneur and MIT professor Philip Greenspun handed Windows 8 one of its most damning reviews yet earlier this week, calling the new operating system a Christmas gift for someone you hate. Greenspun panned almost every aspect of Microsoft s new software, noting that Microsoft had four years to study Android and more than five to examine iOS , but still couldn t build a usable tablet experience.

The only device that I can remember being as confused by is the BlackBerry PlayBook , Greenspun wrote on his blog after using Windows 8 on a Dell ( DELL ) XPS One All-in-One desktop PC. The acclaimed computer scientist noted that Microsoft omitted all of the best features from the most popular touch-focused platforms and instead created a user interface he describes as a dog s breakfast.

Suppose that you are an expert user of Windows NT/XP/Vista/7, an expert user of an iPad , and an expert user of an Android phone you will have no idea how to use Windows 8, Greenspun wrote.

He continued, Some functions, such as start an application or restart the computer are available only from the tablet interface. Conversely, when one is comfortably ensconced in a touch/tablet application, an additional click will fire up a Web browser, thereby causing the tablet to disappear in favor of the desktop. Many of the apps that show up on the all apps menu at the bottom of the screen (accessible only if you swipe down from the top of the screen) dump you right into the desktop on the first click.

The only praise Greenspun offered was that some of the supplied apps are wonderful, pointing to Microsoft s Bing Finance application as an example.

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