The Assumption Hacker's HUB

Simple TOC-based tools and strategies to challenge faulty assumptions, unlock new opportunities, and achieve breakthrough results.

The Assumption Hacker's HUB

Simple TOC-based tools and strategies to challenge faulty assumptions, unlock new opportunities, and achieve breakthrough results.

What is Assumption Hacking?

Assumption Hacking is a simple, practical approach to uncovering, challenging and doing something useful with the assumptions we make. We achieve this by learning to access and unlock the critical assumptions that are hidden behind the powerful firewall known as our brain. Want bigger better breakthroughs in your business? Learn to hack your assumptions.

How is Assumption Hacking Related to TOC?

Assumption Hacking is a skill that lies at the very heart of TOC thinking. Theory of Constraints thrives on uncovering and challenging the hidden assumptions that limit progress, and Assumption Hacking provides a simple, systematic way to do just that. Eli Goldratt himself emphasized this idea in his foreword to The Goal, stating “The challenging of basic assumptions is essential to breakthroughs.”

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– Introductory Concepts and Frameworks –

"Did you follow the recipe?"

Have you ever tried something new only to quickly conclude that it didn't work or that you didn't like it? You could be really missing out! Watch to find out why that is.

Check out the rest of the Assumptions Quest video series.

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– Introductory Concepts –

The Jenrada Clarity Principle

Thinking clearly enough to see and challenge our faulty assumptions. That's the goal. But that clarity has constituent parts. Here JonahLisa explains what those are and how they work together.

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– Introductory Concepts and Frameworks –

From Assumptions to Outcomes

What causes the outcomes we get?

Ultimately, the results we achieve are the effects of assumptions that have been made. They are the direct effects of actions that people have taken. Those actions are in turn the results of decisions made to take them. And those decisions are based on assumptions – what we believe about why a particular action or set of actions would cause the results we seek.  By understanding this framework, we can direct our attention to surfacing and checking the assumptions we make, unlocking new possibilities and better outcomes.

 

– Introductory Concepts and Frameworks –

The ABCs of Assumption Hacking

A simple 5-step process for addressing faulty assumptions. Using the ABCs, you can identify a faulty assumption that's holding you back from the opportunities, results, and breakthroughs you desire. This process helps you uncover the assumption, challenge it, and choose a better path forward.

- Interviews -

In conversation with...

JonahLisa in conversation with other leading TOC thinkers.


How to simplify complex processes

with Philip Marris of Marris Consulting

Why constraints are made to be broken

with Aureo Villagra & Goldratt Circle

Why it's always about the people

with Derek Hudson of Essential Dynamics

- Presentations -

TOC & Assumption Hacking Applied

Core TOC ideas from the past twenty years + commentary on how they'll make you a much better Assumption Hacker.


Synchronize, Communicate, & Align

TOCICO Internation Conference, 2009

Playing by the Numbers

TOC Club, 2018

Navigating Our Growth

TOC Club, 2019

Go to the full Presentation archive →

Courses that will supercharge your Assumption Hacking. 

Short online courses that simplify fundamental TOC concepts, making them easy for you or your team to understand and apply.

Browse Course Catalog

The Assumption Hacker's Advantage

The Assumption Hacker's Advantage (AHA) is our newsletter that offers practical examples and insights into how assumption hacking works in the real world. We tackle everything from current events, to real case studies, to foundational concepts. Sign up today!

The Assumption Hacker's Advantage Newsletter

The Assumption Hacker's Advantage (AHA) offers practical examples and insights into how assumption hacking works in the real world. We tackle everything from current events, to real case studies, to foundational concepts. Sign up today!

Real-world practical insights, straight to your inbox.

Delivered two to three times a month.

We won't send spam. Unsubscribe at any time.

Our most recent AHAs! →

The Implementer's Essentials

Dec 05, 2025

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Nov 05, 2025

Why I Care That TOC Implementations Sustain

Sep 22, 2025

Ready To Get Started With Jenrada?

You've seen how we think. Now you're ready to get to work. Choose the category that best fits you below to discover all that Jenrada has to offer.

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