231116_ATD_Mastering_Broken_Windows_Theory_in_Software_Development

The material used in Agile Testing Days 2023.
About the basics of Broken Windows Theory and practice in an agile organisation.
日本語ではありません。

Transcript

1. Mastering Broken Windows Theory in Software Development Masanori Kawarada (Mark Ward), 2023-11-16, 
 25 min talk for "Conf in a Conf Session" in Agile Testing Days 2023 Revisit the Basic Theory as You May or May Not Know @mkwrd
2. Masanori Kawarada 
 (Mark Ward) @mkwrd •QA Brain ‣ Software Engineering Journeyman with 10+ Years Experience ‣ Quality, Agile Development, and Culture ‣ Developer in Scrum, Quality Advisor, Global Quality Evangelist, 
 Conference Speaker, Translator, Writer, and Organizer of Markin' Quality •MBA Certi fi ed in GLOBIS University, 2022 ‣ Considering how QA Engineer as the Bridge between Business and Technology •International Conference Lover 💖 From Japan 🇯🇵
3. Broken Windows Theory @mkwrd • https://en.wikipedia.org/wiki/Broken_windows_theory
4. Quiz: Next Broken Windows Which Area Will You Find Next Broken Windows in? Area A Area B @mkwrd
5. Quiz: Next Broken Windows Yeah, Excellent!! But Why? Area B @mkwrd
6. •Devastation Spreading to Its Surroundings If Left Unchecked ‣ One broken window lowers the moral and causes community disorder. ‣ To prevent, they have to crack down on every breach of order. •Studies in Criminology ‣ Philip Zimbardo, 1969 ‣ George L. Kelling and James Q. Wilson, 1982 ‣ George L. Kelling and Catharine Coles, 1996 Broken Windows Theory @mkwrd
7. •The United States: Zero-Tolerance Policing ‣ Reducing Violent Crimes Drastically in New York (Critised as It's too Excessive) •Japan's Police Agency: Enforce Parking Violations ‣ Reducing Crimes by 15% over Two Years in An Area of Sapporo City •Tokyo Disney Resort: Environmental Maintenance ‣ Improving Employee and Visitor Etiquette by thorough 
 environmental maintenance like cleanliness and repairing Applied in Real Life @mkwrd
8. @mkwrd How about the Broken Windows Theory 
 Applied in Software Development? 🤔 Although it's interesting theory, but ...
9. •Software Entropy: Nature's Tendency toward Disorder ‣ "When disorder increases in software, programmers call it 'software rot.'" ‣ Technical Debt won't be paid back, can spread uncontrollably, told in 2019 ver. •"Tip 4: Don't Live with Broken Windows" ‣ "Bad designs, wrong decisions, or poor code" ... ‣ Any Disorder should be fi xed as soon as possible. ‣ "Tip 5" in 2019 ver. "The Pragmatic Programmer" (1999) @mkwrd • You should read "20th Anniversary Edition" (2019 ver.) • This session is based on the 1st edition (1999 ver.)
10. •William Levén et al. (2021) ‣ Investigating the causal relationship between the Technical Debt density of a system and the propensity of developers to introduce new Technical Debt during the extension of that system •Terese Besker et al. (2022) ‣ With at least 95% credible intervals, signi fi cant effects of Technical Debt level on the subjects’ tendency to re-produce and introduce other code smells Other Recent Studies @mkwrd Technical Debts Reproduce Technical Debts
11. "OESFX
    )VOU
    BOE
    %BWJE
    5IPNBT +VTU
    UFMM
    ZPVSTFMG
    /P
    CSPLFO
    XJOEPXT l @mkwrd
12. @mkwrd How Can Be Done Practically? 
 It's IMPOSSIBLE to Go without Broken Windows. 🤔 Although the principle says so ...
13. •Discussion about a few Broken Windows in real projects 
 to fi nd out how to fi x them Challenges in The Book @mkwrd • You should read "20th Anniversary Edition" (2019 ver.) • This session is based on the 1st edition (1999 ver.) •Consideration how to fi nd when a window fi rst gets broken, how to react, and what should be done if the result is caused by someone else's decision or a management edict First Step: Find a Broken Window Sooner
14. •De fi ning Broken Windows as Unrecognised Errors in Production ‣ Can't be Perfectly Avoided "Technical Debt" or Other Broken Windows Things ‣ Focused on "All Errors Identi fi ed" •30 Mins Meeting to Watch Errors Every Week ‣ Sentry, the Error Monitoring Platform, Collecting All Errors in Production ‣ Lead by QA Team at First, but Held by Scrum Teams Now ‣ Feeling Effective to Expand Scrum Teams in Other Domains "No More Broken Windows" Activity @mkwrd
15. •Pros ‣ Minimum Habit of Coping Errors in Each Scrum Team ‣ Cultivating Mindset to See What Happens in Production •Cons ‣ Some Members Unable to Participate Every Week ‣ Losing The Way Sometimes due to Not All Errors Resolvable Takeaways of The Activity in 3 Months @mkwrd Iceberg Model • https://www.change-agent.jp/en/systemsthinking/approach/the_iceberg_model.html
16. •Broken Windows Theory Basics ‣ Versatile, Proven Theory from Criminology •Broken Windows Theory in Software Development ‣ Fruitful Learnings from the Classic, "The Pragmatic Programmer" •Real Example with Pros and Cons ‣ De fi ning Your "Broken Windows" for Practical Measures ‣ Identifying Pros and Cons to Improve the Activity Summary @mkwrd
17. Mastering Broken Windows Theory in Software Development Masanori Kawarada (Mark Ward), 2023-11-16, 
 25 min talk for "Conf in a Conf Session" in Agile Testing Days 2023 Revisit the Basic Theory as You May or May Not Know @mkwrd