Abstract
In the past few decades, we have come a long way in making paleobiology more rigorous. We have accumulated an impressive array of quantitative techniques – statistical and otherwise – and these are in use with the full range of paleobiological problems. Also striking is the way the added rigor of our science has spilled over into non-quantitative judgments and interpretations. No longer is the Just-So Story allowed to stand unchallenged. Rather, we respond to these bald assertions and ad hoc theories with: “Can you prove it?” or “Can this be tested?”

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