Forget those details. Look at the big picture, and you'll see a nasty object lesson in what happens when you (and others) put too much trust in your ability to deliver software.
That's what Microsoft executives did. That's also what vendors and IT industry pundits did, which is why words like "bombshell" and "unthinkable" are being tossed around to describe the "Vista slips" announcement. They believed. They trusted.
They shouldn't have.
Vista is the most complicated software product in Microsoft's history, incorporating higher- quality standards and a new approach to software projects -- and facing the same old "keep piling on the new features" culture. That's nothing to inspire confidence in a firm delivery date.
But Vista boss Jim Allchin promised that Vista would be delivered on time. Allchin is an executive who's well liked by his developers, and this product is his last hurrah. He staked his reputation on getting Vista out the door before he retired at the end of this year. And he believed, probably rightly, that his team would do everything in its power to make that happen.