UnknowingFool writes: When the Courier project was leaked out, it was a bold look at how MS would design new tablets. Microsoft was currently selling tablets but they didn't make a dent in the market. The problem was it was too bold. According to the story Ballmer had two competing executive visions for tablets: J. Allard and Steven Sinofsky. Allard's vision was very different from MS thinking while Sinofsky's was more inline with existing Windows but was years away. Ballmer called on Gates to help and Gates met with Allard. Gates was apparently troubled on how Courier would not mesh with Windows or Office. The project was cancelled shortly thereafter. An interesting detail was that Courier was more complete than most outsiders knew. While there was no one prototype than unified all the concepts of Courier, there were parallel efforts in the different aspects of it.