Standard deviations are a factor of two or so either way for basically any long-term model. S2F has to break this decade because it is a highly divergent power law of an exponential, it explodes in a couple more Halvings. S2FX suspect already because of his arbitrary clustering and he forces the model with a gold and silver data points as 2 of only 6 points. There is an upper limit somewhere well below all global wealth. An S-curve that converges (does not blow up) has statistical fit that is superior. As do power law models that diverge more slowly. These models still allow for tens of trillions of market cap over time.