InPhroNeSys
Where SCM Meets Data Science and AI.
Real-world methods for supply chain and operations management professionals who want to go beyond Excel — with reproducible code, realistic datasets, and techniques you can apply today.
Newest Entries
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Four Masters, One Boardroom: A 2,500-Year Operating System for Strategy
Four dead strategists, one boardroom, roughly 2,500 years of canon. Here is the four-layer model that stacks them, and the verified reading list to build it yourself.
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Of the Fox and the Lion: Coercion, Cunning, and Modern Power
Machiavelli’s Chapter 17 and 18 are routinely misread. Force without cunning is brittle. Bonds…
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Mercenaries Will Ruin You: Machiavelli on Outsourced Core Capability
Machiavelli’s argument against mercenaries was never about morality. It was about incentives. Apply it…
ARIMA Art of War Book of Five Rings bupaR Clausewitz context engineering data visualization DDMRP demand-driven demand forecasting demand planning ETS Excel fable forecast accuracy Forecasting fpp3 ggplot2 inventory inventory management lean LLM Machiavelli machine-learning machine learning manufacturing MRP Musashi On War process-mining procurement prompt engineering pull-system R R programming S&OP seasonality Shiny strategy Strategy That Lasts Sun Tzu supply-chain supply chain supply chain analytics time series
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Four Masters, One Boardroom: A 2,500-Year Operating System for Strategy
Four dead strategists, one boardroom, roughly 2,500 years of canon. Here is the four-layer model that stacks them, and the verified reading list to build it yourself.
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Of the Fox and the Lion: Coercion, Cunning, and Modern Power
Machiavelli’s Chapter 17 and 18 are routinely misread. Force without cunning is brittle. Bonds of love break under stress. Here is what actually holds.
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Mercenaries Will Ruin You: Machiavelli on Outsourced Core Capability
Machiavelli’s argument against mercenaries was never about morality. It was about incentives. Apply it to consultants, gig labor, and outsourced core capability.
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Virtù and Fortuna: The Limits of Strategic Control
Machiavelli’s most enduring contribution is the dichotomy between virtù (the part of outcome the strategist controls) and fortuna (the part they do not). Half of action is shaped, half is not. The corporate misreading of which is which corrupts strategic learning at most companies.
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The Void: Strategic Emptiness as Competitive Advantage
Musashi’s final scroll is the shortest and the strangest. Ku is not Zen mysticism — it is the strategic condition of having no fixed form that a competitor can model. Three corporate expressions of emptiness, and the markets where form still wins.
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Hyōshi: Musashi’s Discipline of Tempo
Musashi’s Fire scroll is not about combat. It is about temporal dominance — who controls the rhythm controls the outcome. Three modes of initiative, and the void between intention and action where contests are decided.
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The Way of Strategy: What a 17th-Century Swordsman Knew About Mastery
A duelist who survived more than sixty contests wrote the manual that postwar Japan’s executives read instead of an MBA. Three reasons it still works.
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Schwerpunkt: The Lost Art of Strategic Concentration
Most strategy decks are budget arithmetic dressed up as a plan. Clausewitz had a single word for what is actually happening — and a discipline for fixing it. The lost art of Schwerpunkt.
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Fog of War, Fog of Market: Decision-Making Under Uncertainty
Clausewitz’s answer to uncertainty was not better data — it was better judgment. Two centuries later, most boards still demand certainty before authorising action, and most strategy windows close before the data is ready. This piece is about the qualities Clausewitz called coup d’oeil and Fingerspitzengefuehl, and what they mean when the dashboard is incomplete…
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Friction Is the Strategy: What Clausewitz Knew About Execution
Clausewitz’s 1832 concept of Reibung — friction — is not a complaint about execution. It is the structural diagnosis that strategy decks still refuse to internalise two centuries later. Any strategy that does not budget for friction is not a strategy; it is a wish.
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Win Without Fighting: The Supreme Art in Business Strategy
Sun Tzu’s most cited principle is also his most misread. Winning without fighting is not pacifism — it is raising the cost of opposition so high that conflict becomes irrational for the adversary.
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Shaping the Battlefield: Sun Tzu on Positioning Before Competition
Sun Tzu’s most underappreciated concept is shih (势) — the potential energy of a chosen position. The decisive act in strategy isn’t the fight, it’s the positioning that makes the fight unwinnable for the other side.
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Know Before You Move: Sun Tzu’s Intelligence Doctrine
Sun Tzu’s Chapter XIII is a 2,500-year-old empirical claim: foreknowledge cannot be deduced from inside the room. Most companies still get this wrong — and the failure rates are measurable.
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30 Books Every Forecaster, Demand Planner, and S&OP Lead Should Read — The Inphronesys Bookshelf
An interactive 30-book bookshelf for forecasters, demand planners, S&OP leads, supply chain strategists, and the data scientists who keep them honest. Filter by category and level, build a reading list for your role.
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The Folly of Forecasting
From the Pythia at Delphi to Google’s GraphCast — humans have always demanded the future. Why some forecasts have gotten dramatically better, why others haven’t, and why AI will not deliver the silver bullet.