Hidden Slippage

After reading this, I followed through to here, which meant I ended up here.

To summarise, Michael’s theory is this:

The amount of undetected slippage that can occur on a task that was scheduled to take X, where X is in the range of one hour to one week, is X.

Generally, I’ve found this to be true. However I have to augment it with my experience:

The amount of undetected slippage that can occur on a task that was scheduled to take X, where X is in the range of one hour to one week, is X. However, as X gets closer to one week, the amount of undetected slippage that can occur on a task that was scheduled to take X, is actually X + X.

Those folks who don’t understand this are the same folks who will ask you if you have a “quick minute”. A minute’s 60 seconds, no argument. There’s no such thing as a quick minute that doesn’t last 60 seconds.

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