Up-front #planning or #agile swarming

Do not analyse all detail of your user stories up-front for the next sprint. This is called a mini-waterfall.

Do not develop your user story and then test it. This is also called a mini-waterfall.

Do not split up all your user stories in the sprint planning in tasks. You cannot think of everything up-front. You only need to think of the important things to decide what it take s to put a story in your sprint.

“Considering Backlog Refinement as a “meeting” that includes only the Product Owner and the “Lead Developer”“. Zombie Scrum – Symptoms, Causes and Treatment.

Do as much as needed up-front, elaborate the stories gradually during your sprint and do it as a team. This is called swarming and building up a multi-functional team, where everybody helps each other to jointly reach the sprint goal.

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Estimates becoming commitments

Schedule

Mike Cohn in his book Estimating and Planning:

” If I ask you for an estimate for a high-end word processor and the answer is the end of the week, the probability is 0%. If the estimate you give me is 10 years, the probability is 100%.Each estimate within the end of the week and 10 years comes with its own probability between 0 and 100%. (Armour, 2002)”.