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NoEstimates @ miniIAD
The document discusses issues with estimating in software development projects. It notes that software development involves non-deterministic processes that are difficult to predict due to factors like cognitive biases, emergent requirements, and unpredictable business needs. Rather than relying on estimates, the document advocates for an agile approach that emphasizes just-in-time planning, tight feedback loops, iterative development, and slicing work into small scopes.
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NoEstimates @ miniIAD
- 1. #noestimates why going againstthe tide cannot bring you anything good! info@massimoiacolare.it @iacoware Massimo Iacolare linkedin
- 2. Massimo Iacolare co-founder of theawesome freelance .net and js expert love shipping features love making users happy quality addicted
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- 5. Estimating sucks! End ofstory Questions?
- 6. #noestimates ‣Woody Zuill started thehashtag on twitter ‣nothing new, just a new (bigger) wave ‣lot of buzz, lately If you found estimates bring no value what would you do?
- 7.
- 8. nitpicker corner #noestimates it’san invitation, a challenge
- 9. nitpicker corner #noestimates it’san invitation, a challenge …it doesn’t literally mean never use estimates! The trouble with #noestimates
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- 11. Software development …and why estimating(really) sucks! Part 1
- 12. no best practices socialinteractions learning activity integration
- 13. non deterministic no bestpractices social interactions learning activity integration
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- 18. ok, understood! lets getback to estimates
- 19.
- 20. Unreliable: adj not ableto be relied upon, untrustwhorty
- 21. Asked at thebeginning of a project
- 22. Asked at thebeginning of a project Someone said cone of uncertainty?
- 23. Asked at thebeginning of a project Someone said cone of uncertainty? projectknowledge time cone of uncertainty
- 24. Cost of afeature =
- 25. Cost of afeature = Essential complexity +
- 26. Cost of afeature = Essential complexity Accidental complexity+ from “No silver bullet” Fred Brooks, 1995
- 28. How much timedo you need to add “XYZ”?
- 29. How much timedo you need to add “XYZ”?
- 30.
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- 33. Cognitive biases Optimism bias Anchoringbias Loss aversion
- 34. Cognitive biases Optimism bias Anchoringbias Availability bias Selective perception Loss aversion List of cognitive biases
- 35. My point is… ifyou’re rigorous and determined you can make them work… well “kind of”
- 36. My point is… ifyou’re rigorous and determined you can make them work… well “kind of” Worth the effort?
- 37. My point is… ifyou’re rigorous and determined you can make them work… well “kind of” Worth the effort? Are they a a mean or a goal?
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- 40. Historical reasons management techniques derivedfrom traditional businesses
- 41. Management science’s impossiblequest: in search of predictability The impossible quest for predictability
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- 44. Prioritization estimates == prioritiseon costs learning should be your first priority Introducing deliberate discovery
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- 47. Delivery date order-of-magnitude estimates areenough fixed-time fixed-budget more common and useful
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- 50. Few assumptions ‣ Relevantparts sits in the Complex Domain ‣ Unpredictable business ‣ Detailed planning won’t save us
- 51. Few assumptions ‣ Relevantparts sits in the Complex Domain ‣ Unpredictable business ‣ Detailed planning won’t save us Few ideas…
- 52. Establish a tight feedbackloop at all levels: tdd, continuous delivery, customer
- 53. Establish a tight feedbackloop at all levels: tdd, continuous delivery, customer only thing that works in emergent domains
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- 56. Just enough planning Just-in-timeplanning context changed assumptions debunked more knowledge
- 57. Just enough planning Just-in-timeplanning context changed assumptions debunked more knowledge explore new options
- 58. Iterate like there isno tomorrow
- 59. Iterate like there isno tomorrow working in iterations doesn’t mean iterating Embrace uncertainty
- 60. Become a master inslicing scope Login Catalog Add to cart Checkout
- 61. Become a master inslicing scope you’ll meet deadlines too! Login Catalog Add to cart Checkout
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- 65. I stand onthe shoulders of giants Woody Zuill blog Vasco Duarte blog Neil Killick blog AgileCamp perfect flow - Gabriele Lana part1 - ITA AgileCamp perfect flow - Gabriele Lana part2 - ITA Estimation is the root of most software project failures Stop using story points The perils of estimation …and many, many more. Thank you all!