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Signals & Levers

By Elisabeth Hendrickson, Joel Tosi

Systems Thinking Tools to Unblock Software Delivery

Coming Fall 2026.

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In Signals & Levers, Elisabeth Hendricksonโ€”former VP R&D at Pivotal and author of the enduring Explore It!โ€”and Joel Tosiโ€”who has spent 25+ years delivering software and a decade helping teams stop โ€œchange theaterโ€โ€”teach you to see through the illusions that plague every software organization. Using tools from statistical process control, systems thinking, and economic theory, they show you how to identify real problems and find the levers that create lasting change.

Each chapter delivers practical techniques. Learn to spot critical illusions that derail delivery, build causal diagrams that reveal system dynamics, and uncover hidden connections that make obvious solutions backfire. See how to separate signal from noise, frame problems as testable hypotheses, visualize trade-offs as continuums, build cultures that learn instead of repeating mistakes, and ultimately choose the right path forward given your context. Plus, โ€œBetter in 30 Minutesโ€ exercises let you practice immediately.

Along the way, youโ€™ll meet Theresa, an engineering director. She learned that her teams are late delivering the next release. Again. Frustrated, she digs into the data only to discover that sheโ€™s been suffering from illusions that readers will find all too familiar. Youโ€™ll follow Theresa’s journey as she learns to read signals and find the right levers to fix systemic issues.ย 

Whether you’re a developer tired of death marches, a CTO struggling with predictability, or a PM wondering why everything takes longer than planned, this book provides the systems thinking skills that transform software organizations.

  • Publication Date Fall 2026
  • Pages 388
  • Dimensions 6 x 9 inches
  • Paperback ISBN 9781966280293
  • eBook ISBN 9781966280309
  • Audiobook ISBN 9781966280316

About the Book

In Signals & Levers, Elisabeth Hendricksonโ€”former VP R&D at Pivotal and author of the enduring Explore It!โ€”and Joel Tosiโ€”who has spent 25+ years delivering software and a decade helping teams stop โ€œchange theaterโ€โ€”teach you to see through the illusions that plague every software organization. Using tools from statistical process control, systems thinking, and economic theory, they show you how to identify real problems and find the levers that create lasting change.

Each chapter delivers practical techniques. Learn to spot critical illusions that derail delivery, build causal diagrams that reveal system dynamics, and uncover hidden connections that make obvious solutions backfire. See how to separate signal from noise, frame problems as testable hypotheses, visualize trade-offs as continuums, build cultures that learn instead of repeating mistakes, and ultimately choose the right path forward given your context. Plus, โ€œBetter in 30 Minutesโ€ exercises let you practice immediately.

Along the way, youโ€™ll meet Theresa, an engineering director. She learned that her teams are late delivering the next release. Again. Frustrated, she digs into the data only to discover that sheโ€™s been suffering from illusions that readers will find all too familiar. Youโ€™ll follow Theresa’s journey as she learns to read signals and find the right levers to fix systemic issues.ย 

Whether you’re a developer tired of death marches, a CTO struggling with predictability, or a PM wondering why everything takes longer than planned, this book provides the systems thinking skills that transform software organizations.

Elisabeth Hendrickson
Joel Tosi
Elisabeth Hendrickson

Elisabeth Hendrickson

Elisabeth Hendrickson is a technology leader with over thirty years of experience in the tech industry, having led geographically distributed teams of engineers, product managers, and designers as VP R&D at a publicly traded company and VP Engineering at a Series B startup. She is the author of Explore It! and There's Always a Duck, and currently works with technology leaders to improve collaboration, decision making, and execution. Her philosophy centers on putting people first, focusing on incremental delivery and learning, and recognizing that there are many right ways to achieve outcomes depending on context, making her methodology-agnostic while emphasizing the importance of tight feedback loops and collaborative partnerships.

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Joel Tosi

Joel Tosi

Joel Tosi has been delivering software products for over 25 years. Along the way, he has felt frustrated that he couldnโ€™t express himself effectively; managed teams where he could see the problems they were experiencing but couldnโ€™t get his peers to see them the same way; and seen far too many good intentions end in less-than-desirable results. Joel has stories. For the past decade, Joel has focused on helping make it easier for teams to enjoy their work and innovate. This has led him to seek new ways to express what is holding teams back so everyone can see the same reality. Frequently, what is holding teams back is the network effect inside of an organizationโ€”the system reacting. Blindly following processes never solves this. Joel started leveraging the techniques in this book to help teams tell their story, then to educate managers and executives on them so they could make better decisions together. Ultimately, it is about stopping change theater. Joel has been presenting the concepts in this book internationally for over five years and continues to explore new ways to leverage these techniques to help make work more enjoyable. The joy when people say, โ€œNow others can see what I have been feeling,โ€ is a wonderful feeling.

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