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> A mathematical and statistical person would have a lot of fun building prediction models for all the different geysers.

It's so popular that one of the datasets immediately available in base R is the set of waiting times between eruptions for a Yellowstone geyser [1].

In fairness, the geyser in question is Old Faithful, among the best-known geysers in the world, renowned for its regularity.

I’m not sure that it’s particularly more regular than most other geysers, but that’s what is known for.

Before a 1959 earthquake, Old Faithful had a very regular cycle time - thus the name. Since then, the name has become less apt.