tps lean and scrum · 2016-07-12 · tps lean and scrum ... lean manufacturing the expenditure of...
TRANSCRIPT
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TPS Lean and Scrum
How they are developed and influenced one another
Kiro Harada Attractor Inc.
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बोिधसेन
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Bodhisena visited Japan in 736 A.C.
http://www.chinabuddhismencyclopedia.com/en/index.php?title=File:Bodhisena.jpg
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“The principal object of management should be to secure the maximum prosperity for the employer,
coupled with the maximum property for each employee”
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“The important object of both the workmen and the management should be the training and
development of each individual in the establishment, so that he can do (at his fastest pace and with the
maximum of efficiency) the highest class of work for which his natural abilities fit him.”
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Scientific Managementimproving economic efficiency, especially labor productivity by applying science to the engineering of processes and to management.
Frederik Taylor
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When we started thinking about Productivity?
We’ve been doing try and errors all the time.
When did we start thinking about improving?
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In early 1900’s,
We decided to specialize more to improve productivity:
Thinkers and Doers
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Managers and Workers
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Manufacturing Line
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A Manager for Managers?
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Management Hierarchy
http://commons.wikimedia.org/wiki/File:Tabulating_Machine_Co_Organization_Chart.jpg
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and it worked GREAT!
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Hawthorne Experiment (1924-1932)
http://en.wikipedia.org/wiki/Hawthorne_effect
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What causes Productivity?
http://www.library.hbs.edu/hc/hawthorne/
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Informal Organization
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Origin of Human Relationship Theory
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Organizational Sabotage
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The principles of scientific management - Frederick Taylor
“The great majority of workmen still believe that if they were to work at their best speed they would be
doing a great injustice to the whole trade by throwing a lot of men out of work.”
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Self-Management
When did we start thinking of Autonomy?
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Toyoda Type G Automatic Loom (1924)
http://commons.wikimedia.org/wiki/File:1924_Non-Stop_Shuttle_Change_Toyoda_Automatic_Loom,_Type_G_1.jpg
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This loom was special:
It automatically stops when a thread is broken.
It only produces good product.
An operator could manage 60 looms of this kind.
A traditional loom needed an operator each.
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The Machine that Changed the World (1990)
Toyota’s Secret Weapon in the Global Car Wars
Based on IMVP Phase 2 study (1984-1990)
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Lean Manufacturing
the expenditure of resources in any aspect other than the direct creation of value for the end customer to be wasteful, and thus a target for elimination.
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7 Wastes - Muda 無駄Transportation
Inventory
Motion
Waiting
Over-Processing
Over-Production
Defects
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Toyota Production System
Figure curtesy of Satoshi Kuroiwa
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Multi-skilled Worker
Skill Map with Training Plans
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TPS is not really about
Manufacturing, rather more about Developing People
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How TPS was born…
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Toyoda Type G Automatic Loom (1924)
http://commons.wikimedia.org/wiki/File:1924_Non-Stop_Shuttle_Change_Toyoda_Automatic_Loom,_Type_G_1.jpg
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Toyota was almost bankrupt in 1950’s.
A major labor dispute resulted in resignation of most executives including the founder Kiichiro Toyoda.
They had no money to buy extra machines, lines, parts and hire managers.
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TWI Program in WW II (Training Within Industry)
(1940 - 1945)
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To make your work
Easier and Safer
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TWI was introduced in Japan
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NUMMI (Now Tesla Factory)
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New Profession: Programmer
Ada Lovelace
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Management the Development of Large Software Systems
a.k.a. Waterfall Method
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We’d tried to run Software Dev just like Manufacturing Factories
http://en.wikipedia.org/wiki/KUKA#mediaviewer/File:BMW_Leipzig_MEDIA_050719_Download_Karosseriebau_max.jpg
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but did not work
Challenged 54% Cancelled
32%
Successful 14%
Chaos Report / 1994
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See what Winston Royce actually said:
I SYSTE M
I ANALYSIS
PROGRAM DESIGN
I c o o , . o
TESTING
I OPERATIONS
Figure 2. Implementation steps to develop a large computer program for delivery to a customer.
I believe in this concept, but the implementation described above is risky and invites failure. The problem is illustrated in Figure 4. The testing phase which occurs at the end of the development cycle is the first event for which timing, storage, input /output transfers, etc., are experienced as distinguished from analyzed. These phenomena are not precisely analyzable. They are not the solutions to the standard partial differential equations of mathematical physics for instance. Yet if these phenomena fail to satisfy the various external constraints, then invariably a major redesign is required. A simple octal patch or redo of some isolated code wil l not f ix these kinds of diff iculties. The required design changes are l ikely to be so disruptive that the software requirements upon which the design is based and which provides the rationale for everything are violated. Either the requirements must be modif ied, or a substantial change in the design is required. In effect the development process has returned to the origin and one can expect up to a lO0-percent overrun in schedule and/or costs.
One might note that there has been a skipping-over of the analysis and code phases. One cannot, of course, produce software wi thout these steps, but generally these phases are managed wi th relative ease and have l i tt le impact on requirements, design, and testing. In my experience there are whole departments consumed with the analysis of orbi t mechanics, spacecraft att i tude determination, mathematical opt imizat ion of payload activity and so forth, but when these departments have completed their di f f icul t and complex work, the resultant program steps involvea few lines of serial arithmetic code. If in the execution of their d i f f icul t and complex work the analysts have made a mistake, the correction is invariably implemented by a minor change in the code with no disruptive feedback into the other development bases.
However, I believe the illustrated approach to be fundamental ly sound. The remainder of this discussion presents five addit ional features that must be added to this basic approach to eliminate most of the development risks.
329
I SYSTE M
I ANALYSIS
PROGRAM DESIGN
I c o o , . o
TESTING
I OPERATIONS
Figure 2. Implementation steps to develop a large computer program for delivery to a customer.
I believe in this concept, but the implementation described above is risky and invites failure. The problem is illustrated in Figure 4. The testing phase which occurs at the end of the development cycle is the first event for which timing, storage, input /output transfers, etc., are experienced as distinguished from analyzed. These phenomena are not precisely analyzable. They are not the solutions to the standard partial differential equations of mathematical physics for instance. Yet if these phenomena fail to satisfy the various external constraints, then invariably a major redesign is required. A simple octal patch or redo of some isolated code wil l not f ix these kinds of diff iculties. The required design changes are l ikely to be so disruptive that the software requirements upon which the design is based and which provides the rationale for everything are violated. Either the requirements must be modif ied, or a substantial change in the design is required. In effect the development process has returned to the origin and one can expect up to a lO0-percent overrun in schedule and/or costs.
One might note that there has been a skipping-over of the analysis and code phases. One cannot, of course, produce software wi thout these steps, but generally these phases are managed wi th relative ease and have l i tt le impact on requirements, design, and testing. In my experience there are whole departments consumed with the analysis of orbi t mechanics, spacecraft att i tude determination, mathematical opt imizat ion of payload activity and so forth, but when these departments have completed their di f f icul t and complex work, the resultant program steps involvea few lines of serial arithmetic code. If in the execution of their d i f f icul t and complex work the analysts have made a mistake, the correction is invariably implemented by a minor change in the code with no disruptive feedback into the other development bases.
However, I believe the illustrated approach to be fundamental ly sound. The remainder of this discussion presents five addit ional features that must be added to this basic approach to eliminate most of the development risks.
329
Winston W. Royce (1970). "Managing the Development of Large Software Systems" in: In: Technical Papers of Western Electronic Show and Convention
(WesCon) August 25–28, 1970, Los Angeles, USA. in 1970
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Software Crisis
The Oregon Experiment (1975) , Christopher Alexander
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Christopher Alexander
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A Pattern Language (1977)
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The Timeless Way of Building (1979)
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"At the core... is the idea that people should design for themselves their own houses, streets and communities. This idea... comes simply from the observation that most of the wonderful places of the world were not made by architects but by the people".
Christopher Alexander et al.,
A Pattern Language, front bookflap
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Pattern Language
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Eishin Gakuen Campus
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Nature of Order (2004)
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Pattern Language for Software Development?(1993)
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Wiki Wiki Web
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Hillside Group
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Pattern Language of Programs
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Organizational Patterns
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Organizational Patterns
NAMED STABLEBASES
TAKE NOSMALL SLIPS COMPLETION
HEADROOMRECOMMITMENT
MEETING
WORKQUEUE
INFORMALLABOR PLAN
PROGRAMMINGEPISODE
DEVELOPER CON-TROLS PROCESS
SOMEONE ALWAYSMAKES PROGRESS
INTERRUPTSUNJAM BLOCKING
SIZE THEORGANIZATION
ENGAGECUSTOMERS
SURROGATECUSTOMER
SCENARIOSDEFINE PROBLEM
FIREWALLS
SELF SELECTINGTEAM
UNITY OFPURPOSE
TEAMPRIDE
PATRON ROLE
HOLISTICDIVERSITY
ENGAGEQUALITY
ASSURANCE
GROUPVALIDATION
COMMUNITYOF TRUST
FEW ROLES
PRODUCERROLES
PRODUCERS INTHE MIDDLE
ORGANIZATIONFOLLOWS LOCATION
SHAPING CIRCULA-TION REALMS
DISTRIBUTEWORK EVENLY
RESPONSIBILITESENGAGE
MOVERESPONSIBILITIES
3 TO 7 HELPERSPER ROLE
COUPLINGDECREASES
LATENCY
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Conway’s Law
Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure.
—M. Conway
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Organization Architecture and Product Architecture
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OODA Loop (1976)
http://en.wikipedia.org/wiki/OODA_loop
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Control Theory
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Empirical Process
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New New Product Development Game (1986)
https://hbr.org/1986/01/the-new-new-product-development-game/ar/1
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Knowledge Creating Company (1995)
How Japanese Companies Create the Dynamics of Innovation
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SECI Process
SECI, Ba and Leadership: a United Model of Dynamic Knowledge Creation Ikujiro Nonaka, Ryoko Toyama and Noboru Konno
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Community (as Ba)
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Improve Productivity Quality by Stopping Specialization
People are naturally multi-skilled.
Swarm of People
Kaizen Mind
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Scrum1990’s
EASEL Company (Jeff Sutherland)
ADM Company (Ken Schwaber)
1995
OOPSLA Paper
2002
Agile Project Management with Scrum (Ken and Mike Beedle)
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Agile ManifestoWe are uncovering better ways of developingsoftware by doing it and helping others do it.Through this work we have come to value:
Individuals and interactions over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan
That is, while there is value in the items onthe right, we value the items on the left more.
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The Toyota Way (2003)
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Lean Product and Process Development (2007)
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Lean Product & Process Development
Creation of Re-usable Knowledge
Set-Based Concurrent Engineering
Teams of Responsible Experts
Cadence and Pull
Visual Management
Entrepreneurial System Designer (ESD)
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ScrumPLoP (2010- )
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http://qz.com/196200/toyota-is-becoming-more-efficient-by-replacing-robots-with-humans/
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ScrumScrum has been developed through struggle to find better ways.
Scrum is not a method or process to tell you the right answer.
Scrum is a tool to help you collaborate to find the better ways.
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Autonomous Loom
Org Patterns
A Pattern Language
PLoPs
Scientific Management
Hawthorne Experiment
Training Within
Industry
Toyota Production
System
Kaizen
Lean Product
Development
Scrum
New New Product Develop
Game
Knowledge Creation
Company
Human Relationship
Theory
Empirical Process
ScrumPLoP
Ford System
Job Methods Software
Patterns
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Continuing FutureScrum encourages you to:
keep learning from others and keep practicing.
keep helping others to learn.
keep creating re-usable knowledge to improve your product, your process, your organization, your team and yourself, to have them more generative and lively.
This is how scrum is developed and evolved and will be.