What’s warranted?

You are at the checkout of the big-box store, purchasing an item of consumer electronics worth about $200. As the sales clerk runs your credit card for the purchase, he asks in a bored tone, “Would you like to purchase an extended warranty for this?”
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Sink or float?

One of the most important, and least understood, aspects of project management is the ‘float.’ Generally thought of as extra time or leeway for completing work, its use remains controversial, with some arguing the calculations involved are fraught with deception.
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