Two Weeks

It seems that the rhythm to developing software in XP marches to a beat marking TwoWeeks. What is magic about TwoWeeks?

I tried OneWeek instead of TwoWeeks in a project recently, and I think OneWeek is just too short for useful stories to emerge. We ended up tacking simpler stories first since they fit the week boundary, instead of the riskier ones.
See ProjectVelocity

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