Questions for you:
- Where in your work do you follow the same routine or process simply because “that’s how we’ve always done it,” making your responses predictable to anyone watching?
- When negotiating, presenting, or competing, which of your tactics have you used so often that informed opponents could anticipate and counter them?
- In what situations have you mistaken consistency for professionalism, when unpredictability might actually serve you better?
Applications for your organisation:
- Security response procedures: If your incident response follows documented playbooks that never vary, attackers can test your defences up to the threshold without triggering alerts. Randomise response triggers, vary monitoring patterns, and introduce unpredictability in when and how you investigate anomalies. Fixed thresholds (three failed logins, always review logs Monday morning) are reconnaissance gifts to adversaries.
- Audit and compliance checks: Scheduled annual audits or predictable quarterly reviews allow time for concealment and window-dressing. Randomised audit timing, varied scope, and unpredictable sampling methods prevent preparation of specific evidence. The uncertainty itself improves ongoing compliance better than predictable periodic checks.
- Competitive strategy execution: If your product launch cycles, pricing changes, or market entry tactics follow observable patterns, competitors develop countermeasures. Varying timing, approach, and execution style prevents rivals from positioning defences in advance. Predictable innovation cycles are roadmaps for competition.
Further reading
On game theory and strategic unpredictability:
The Art of Strategy: A Game Theorist’s Guide to Success in Business and Life by Avinash K. Dixit and Barry J. Nalebuff (W.W. Norton, 2008). Accessible introduction to game theory with practical examples of when and how to randomise strategies to prevent exploitation by competitors.
Game Theory: A Very Short Introduction by Ken Binmore (Oxford University Press, 2007). Concise explanation of key game theory concepts including Nash equilibrium and why randomised strategies are often optimal in competitive situations.
On cybersecurity and unpredictable defence:
The Cuckoo’s Egg: Tracking a Spy Through the Maze of Computer Espionage by Clifford Stoll (Doubleday, 1989). True story demonstrating how systematic attackers probe for defensive patterns and how unpredictable responses can confound sophisticated adversaries.
Beyond Fear: Thinking Sensibly About Security in an Uncertain World by Bruce Schneier (Copernicus Books, 2003). Security expert explains trade-offs between predictable rules-based security and adaptive, unpredictable responses.
On military strategy and deception:
The Art of War by Sun Tzu (various editions, original c. 5th century BC). Ancient military treatise emphasising unpredictability, deception, and avoiding exploitable patterns in warfare. Foundational text on strategic thinking.
Surprise, Security, and the American Experience by John Lewis Gaddis (Harvard University Press, 2004). Historical analysis of how predictable behaviour creates vulnerability to attack and why strategic surprise remains militarily valuable.
On randomised algorithms and systems:
Randomized Algorithms by Rajeev Motwani and Prabhakar Raghavan (Cambridge University Press, 2013). Technical but authoritative treatment of how randomisation improves algorithm performance and security properties. For readers with mathematical background.
Algorithms to Live By: The Computer Science of Human Decisions by Brian Christian and Tom Griffiths (Henry Holt, 2016). Accessible explanations of randomised algorithms with applications to everyday decision-making and strategy.
On competitive strategy:
Good Strategy Bad Strategy: The Difference and Why It Matters by Richard P. Rumelt (Crown Business, 2011). Strategy consultant explains why predictable strategies fail and how creating genuine strategic surprise provides competitive advantage.
Competitive Strategy: Techniques for Analyzing Industries and Competitors by Michael E. Porter (Free Press, 1980). Foundational business strategy text including analysis of when unpredictable moves prevent competitive countermeasures.
On human pattern-seeking behaviour:
The Drunkard’s Walk: How Randomness Rules Our Lives by Leonard Mlodinow (Pantheon, 2008). Explains why humans are terrible at generating random sequences and how this cognitive limitation makes genuine randomisation strategically valuable.
Rock, Paper, Scissors: Game Theory in Everyday Life by Len Fisher (Basic Books, 2008). Accessible examples of mixed strategies in daily life, explaining why even simple competitive situations benefit from unpredictability.
Interactive exhibit
Have a play yourself on our Rock Paper Scissors game! https://experiments.randomthebook.com/rockpaperscissors/
About the image
The background is derived from asking an LLM to create something that resembles a map. The photograph is of a playful experiment I created in 2025 with some magnetic rubber ducks – the Ducksinarowometer.
Photo montage and photo by Matt Ballantine, 2026 and 2025.
Random the Book 