About the Author

I'm a practicing Catholic, a software engineer, and a volunteer firefighter living near Prague, Europe. I'm passionate about reconciling the conflicting views of liberals and conservatives, as well as naturally integrating Catholic theology and science within a unified model. I believe that if technology is deployed in the right way, it can help break down the barriers between opposing sides of society and enable us to capture truth at any desired level of detail.

Design Patterns of Catholic God

Church doctrine in software terms without simplification and prejudice

Imagine understanding Catholic doctrine like a pro after reading a single, average-sized book written in terms you already know.
This book presents the Catholic faith through clear and accurate software analogies, preserving its inner logic and beauty without dumbing it down.
It also offers a compact, contemporary thought model for practical reasoning, much like the thought models understood by ordinary people in the Middle Ages.
If you have some IT experience, you can easily grasp the precise version of what Catholics believe and why—without needing prior knowledge of biblical terminology or the centuries-old philosophy of Aristotle and Aquinas.
To believe or not? You can make an informed choice.
This book is free of culture-war rhetoric.

Your feedback is invaluable! If you have suggestions for improvement or topics you would like to see explored further, please email designpatterns@karelmoulik.com.

A Brief Outline of the Chapters

Part I - Reason’s Path to God

  • Core Message: Experience with information technology may help make theology more precise and universally accessible.
  • Intended Audience: The author’s personal story serves as a guide to who will benefit from reading the book.
  • Objective: How science may conceal God, while the information technology approach demonstrated in this book may help reveal Him.
  • Basic Terms: How faith, fanaticism, belief, and the pursuit of truth are defined in the context of this book.
  • Point of Origin: Original sin can be understood as our debt in the pursuit of truth.
  • Suffering and Contingency: Why seeking the truth is always a better goal than trying to reduce your own suffering.
  • Matter in Itself: There is a striking similarity between the mindset of software engineers and that of medieval thinkers—and recognizing this may be key to achieving AGI.
  • Randomness and Belief: The striking similarity between the way randomness is always external to any software program and the way it is also external to spacetime points to God’s existence.
  • Before Christ: Why being a 'useful idiot' is preferable to being a committed Marxist — and how this distinction reflects the divide between the eras before and after Christ.
  • Word: The word is a far more fundamental building block for software and theology than photons and atoms are for physics. Similarly, community is just as essential for understanding the inner world as experiments are for understanding the outer world.
  • Word in Practice: How the word can change your life.
  • Name of God: Why, to software engineers, 'I am' naturally seems like a fitting name for the designer of this world.
  • Anthropomorphic God: Why all alternatives to the Christian God are either evil or irrational—even though He permits the existence of evil.
  • Trinitarian Design: How what has been said so far naturally points to the identity of the Lord Jesus—the only begotten Son, fully God and fully man, possessing both a divine will and a human will.

Part II - Jesus of Nazareth

  • God’s Desire: How the identity of the Lord Jesus naturally implies what He desires from us—and how this involves forgiveness and prayer.
  • Is he He?: Why Christ Jesus is the only historical figure who matches the identity of the Son of God.
  • Lamb of God: What does it mean that Christ died for our sins and saved us? How does this work, and in what sense is it accomplished?
  • Heaven or Hell?: How everything said so far naturally implies the existence and nature of heaven, hell, and purgatory.
  • The End: Why the Eucharist is the center of life for Catholics, whose reverence for God arises not only from reason but also from the heart.
  • The Age of Addiction (Epilogue): How this book applies to current challenges and recent events in 2025.