the science of kanban

The Science of Kanban

KARLSCOTLAND

kscotland@rallydev.comhttp://availagility.co.uktwitter.com/kjscotland

Scientific Management

System

Study

Share

LimitSense

Learn

Complicated• Potentially Knowable• Cause-Effect separated in time

& space• Sense → Analyse → Respond

Simple• Known• Cause-Effect perceivable,

predictable, repeatable• Sense → Categorise → Respond

Complex• Retrospectively Coherent• Cause-Effect not repeatable• Probe → Sense → Respond

Chaos• Incoherent• Cause-Effect not perceivable• Act → Sense → Respond

Un

ord

ere

d D

omai

ns

Ord

ere

d Do

ma

ins

Disorder

http://www.cognitive-edge.com/

People

Clark & Wheelwright: Managing New Product and Process Development

12

34

5

0

10

20

30

40

50

60

70

80

90

100

Working Time Context Switching Time

Number of Simultaneous Projects

Per

cen

t

Gerald Weinberg, Quality Software Management: Systems Thinking

Assumptions Strategies & Techniques Results

Single Loop Learning

Double Loop Learning

Process

Utilisation

Que

ue

Queuing Capacity Utilisation

Lead Time = Queue Size / Processing Rate

Flow = Speed x Density

Density

Speed

Flow

Miles per Hour

VehiclesperMile

VehiclesperHour

MilesperHour

Difference

Adjustment

BTemperatureDel

ay

Fast Feedback

Smaller Queues

Lower WIP

Faster Flow

Economics

Dis

coun

ted

Cas

h

Investment Period Payback Period Profit Period

Time

Self-fundingPoint

Break-evenPoint

MaximumCashInjectionNeeded

Life Cycle Profits

Expedite

Standard

FixedDate Intangible

Cos

t

Time

Cost of Delay

Probability of Failure

Info

rmat

ion

0% 100%

Information Theory

Ideas

Build

Code

Measure

Data

Learn

Lean Startup

Pay

off

Performance

Target

Loss

Gain

Asymmetric Pay-offs

Sequence Early

Sequence Late

Cost of Risk Reduction

Val

ue o

f R

isk

Red

uctio

n

Risk Reduction

Plan

Do

Check

Act

Observe

Orient

Decide

Act

Why

How

What

The Golden

Circle

http://www.startwithwhy.com/

Productivity Quality

Responsiveness

Customer Satisfaction

Predictability

EmployeeSatisfaction

Economics

ProcessPeople

Lean

Books

• Kanban – David J. Anderson• The Principles of Product Development

Flow – Donald G. Reinertsen• Brain Rules – John Medina• Software by Numbers – Mark Denne &

Jane Cleland-Huang

Thank you!

Email: kscotland@rallydev.comTwitter: http://twitter.com/kjscotland

Blog: http://availagility.co.uk