Theory of Constraints · Change Management

Resistance to change does not exist.

Offer anyone ten million euros, no strings attached. That is a profound change — and nobody resists it. People never resist change itself. They resist the consequences they expect: what they might lose, and the pain of getting there.

The TOC Thinking Processes answer those concerns one by one — until the organisation is implementing its own plan.

A · Common objective B · Need stability C · Need improvement D · Don't change D' · Change now hidden assumption: "change means loss" assumption invalidated → conflict evaporates
The Evaporating Cloud — hover to break the assumption
The method

Every successful change answers four questions — in order

Most change programmes fail because they start at question three. The Thinking Processes force the sequence.

Q1

What to change?

Find the core problem behind the symptoms everyone complains about — usually one or two root causes, not fifty.

Q2

What to change to?

Dissolve the underlying conflict instead of compromising it, and test the solution on paper before touching operations.

Q3

How to cause the change?

Turn the obstacles people raise into the implementation roadmap — built by the people who must execute it.

Q4

How to sustain it?

Anchor the change in measurements and a process of ongoing improvement, so results don't erode after the consultants leave.

The instruments

Six Thinking Processes, one logical chain

Developed by Dr. Eli Goldratt, each tool answers one specific stage of a change — with cause-and-effect logic anyone in the room can verify.

Q1 · What to change

Current Reality Tree

Connects today's undesirable effects to their root causes. Symptoms and causes become visibly distinct — even in complex organisations.

Q2 · Direction

Evaporating Cloud

Exposes the conflict that keeps the problem in place — and the hidden assumption that, once invalidated, makes the conflict disappear.

Q2 · Proof

Future Reality Tree

Tests the solution before implementation: does it logically lead to every desired effect? Holes are found on paper, not in production.

Q2 · Side-effects

Negative Branch Reservations

Takes every "yes, but…" seriously. Predictable side-effects are surfaced and trimmed before they can derail a good project.

Q3 · Roadmap

Prerequisite Tree

Turns raised obstacles into intermediate objectives. The people who see the obstacles build the roadmap — and own it.

Q3–Q4 · Execution

Strategy & Tactics

Converts strategy into necessary-and-sufficient steps, from boardroom to shop floor, each step checked for logic before action.

Buy-in

Consensus is not luck — it's a process

Objections arrive in a predictable order. Each layer of resistance is answered by a specific tool, moving the organisation from red to green.

1 · "We don't agree on the problem"

→ Current Reality Tree

2 · "We don't agree on the direction of the solution"

→ Evaporating Cloud

3 · "The solution won't solve the problem"

→ Future Reality Tree

4 · "Yes, but it will cause new problems"

→ Negative Branch Reservations

5 · "Yes, but we can't implement it"

→ Prerequisite Tree

6 · Unspoken fear, no commitment to act

→ Leadership, S&T and clear first steps

colour code borrowed from TOC buffer management: red = expedite, amber = watch, green = flow

Proof

What organisations achieve with this approach

Break-through solutions to attack new markets — developed and agreed in weeks, not quarters.

Consensus to stop 80% of running projects and replace them with one global strategic project.

Market share gained in crisis time by correctly utilising overcapacity instead of cutting it.

Management habits shift from ruling isolated kingdoms to a team cooperating towards common goals.

Support gained from the most 'difficult' groups and individuals in the organisation.

A strategy built on more throughput — rather than another round of austerity.

Why Bureau Léonard

Expertise you can verify

  • Decades of TOC consulting — certified in TOC manufacturing and project management
  • Drum-Buffer-Rope and Critical Chain implementations in pharma, chemical, electrical, glass, construction and software industries
  • Hundreds of professionals trained in Critical Chain and the Thinking Processes — in Dutch, French or English
  • In-company Thinking Process workshops and strategic sessions with know-how transfer

Start with one conflict

Bring us the change your organisation keeps postponing. In a first working session we'll map the conflict that blocks it — and the assumption that can make it evaporate.

Book a working session

info@leonard.eu.com · +32 3 448 06 15 · Kontich, Belgium