To pair, or not to pair

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To Pair, or not to Pair Birgitta Böckeler | @birgitta410

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1940s: The first programmers

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“Betty Snyder and I, from the beginning, were a pair. And I believe that the best programs and designs are done by pairs, because you can criticise each other, and find each other’s errors, and use the best ideas.” Jean Bartik http://www.computerhistory.org/revolution/birth-of-the-computer/4/78/2258 1940s: The first programmers

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30-40 years later https://twitter.com/MrAlanCooper/status/1060553914209071106

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Another 10-20 years later

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1 IT’S A LONG GAME.

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https://martinfowler.com/bliki/PairProgrammingMisconceptions.html

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2 ONE DOES NOT SIMPLY PAIR PROGRAM.

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IS IT WORTH THE HASSLE? CHALLENGES BENEFITS

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BENEFITS

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1 + 1 > 2

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1 + 1 > 2 Knowledge sharing Combine 2 modes of thinking: Tactical and strategic Helps you get unstuck Onboarding

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AVOID WASTE

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„THE 7 WASTES OF SOFTWARE DEVELOPMENT“ Mary & Tom Poppendieck: „Implementing Lean Software Development: From Concept to Cash“

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Partially Done Work Extra Features Relearning Handoffs Delays Task Switching Defects „THE 7 WASTES OF SOFTWARE DEVELOPMENT“ * Mary & Tom Poppendieck: „Implementing Lean Software Development: From Concept to Cash“

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Partially Done Work Extra Features Relearning Handoffs Delays Task Switching Defects „THE 7 WASTES OF SOFTWARE DEVELOPMENT“ Mary & Tom Poppendieck: „Implementing Lean Software Development: From Concept to Cash“

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1 handoff 2 handoffs 3 handoffs 4 handoffs 5 handoffs Knowledge lost in handoffs Mary & Tom Poppendieck: „Implementing Lean Software Development: From Concept to Cash“

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Seen on https://devops.com/dark-side-infrastructure-code/

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FLOW

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FLOW Focus

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Kathy Sierra, „Your brain on multitasking“ https://headrush.typepad.com/creating_passionate_users/2005/03/your_brain_on_m.html

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FLOW Focus Reduced team WIP

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Kathy Sierra, „Your brain on multitasking“ https://headrush.typepad.com/creating_passionate_users/2005/03/your_brain_on_m.html

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TRUE CONTINUOUS INTEGRATION

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TRUE CONTINUOUS INTEGRATION Code review “on-the-go” Collective code ownership >>Trunk-based development

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CHALLENGES BENEFITS 1+1>2 AVOID WASTE CONT. INTEGRATION FLOW

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ENERGY

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ENERGY Don’t pair 8 hours a day Take breaks Switch roles and modes

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COLLABORATION

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COLLABORATION Feedback Exchange “READMEs” Awareness of your differences

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IT’S PERSONAL

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“To pair requires vulnerability. It means sharing all that you know and all that you don’t know. This is hard for us.” Tom Howlett, “The Shame of Pair Programming” https://diaryofascrummaster.wordpress.com/2013/09/30/the-shame-of-pair-programming/

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“you can criticise each other and find each other’s errors”

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IS IT WORTH THE HASSLE? CHALLENGES ENERGY INTENSE COLLAB. IT’S PERSONAL … BENEFITS 1+1>2 AVOID WASTE CONT. INTEGRATION FLOW

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Concentration Giving & Receiving Feedback Task organisation Time management Empathy Communication

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Pia Nilsson, “Knowing Me, Knowing You - Growing teams to continuously deliver” https://www.youtube.com/watch?v=S92vVAEofes

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Pia Nilsson, “Knowing Me, Knowing You - Growing teams to continuously deliver” https://www.youtube.com/watch?v=S92vVAEofes Diversity

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https://hbr.org/2016/09/diverse-teams-feel-less-comfortable-and-thats-why-they-perform-better “Homogeneous teams feel easier – but easy is bad for performance” Fluency Heuristic

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Pia Nilsson, “Knowing Me, Knowing You - Growing teams to continuously deliver” https://www.youtube.com/watch?v=S92vVAEofes

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IT’S FUN!

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EMBRACING CHANGE += EMBRACING FRICTION

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To Pair, or not to Pair Do something today that your future self will thank you for. Birgitta Böckeler | @birgitta410