Synthesis: The Six Cycle Theories Compared
In modules 5.1 through 5.7 you encountered six families of theory, all attempting to explain the same phenomenon: why economic and social developments repeat in patterns. They partly contradict one another, but also complement each other — depending on the level of analysis (short- vs. long-term, macro vs. market).
The matrix below shows at a glance where each theory is strong and where it is limited:
| Theory | Periodicity | Measurable? | Trading Relevance | Strength | Weakness |
|---|---|---|---|---|---|
| Kondratieff | 50–60 yrs | ⚠️ Weak | Long-term (Sectoral) | Describes technology clusters well | n=5, boundaries ex-post |
| Schumpeter | ~50 yrs | ⚠️ Weak | Sectoral (Disruption) | Innovation theory broadly supported | No timing signal |
| Strauss-Howe | 80–100 yrs | ❌ No | Narrative / Macro-Bias | Societal sentiment | n=3, USA-only, not falsifiable |
| Minsky | 10–20 yrs | ✅ Proxy-capable | High (Credit Risk) | Mechanism clearly described | No real-time index |
| Dalio | ~75 yrs | ✅ Partially | High (Macro Allocation) | Broad empirical data base | Simplifying, US-centric |
| Wyckoff | Months–Years | ✅ Yes (Chart) | Very high (Timing) | Only chart-based theory | Algos distort patterns in major markets |
Reading guide: "Measurable" means: Are there one or more publicly available indicators (FRED, BIS, CBOE, etc.) that approximately quantify the phase in real time? Wyckoff is measurable via price/volume data, Minsky via credit spreads and covenant-lite shares; Kondratieff and Strauss-Howe are not.