3x3 Speedcubing: The Ultimate Limits Forecast

Caveats & Pitfalls

1. Future "method revolutions" are discrete. ZB→1LLL or new methods aren't in the trend. Cadence ~8-10 years.
2. Extreme-value sample dependence. More attempts → expected min drops 1-2% (N = 10⁷).
3. WCA rule unpredictability. 1-3% historical discontinuities every 5-10 yrs.
4. Training-comp gap stays at 5-10%. Even if training sub-2, comp takes a slice.
5. "Unknown unknowns". Top-cuber aging curves? Psychological ceiling? No peer-reviewed data.

Final assessment. All forecasts best-estimate; 5-yr ±10%, 25-yr ±30%, 50-yr order-of-magnitude. Not an oracle — a framework to iterate.