Paleontologists and film production designers have often speculated about the behavioral patterns that would govern a Tyrannosaurus rex if it encountered a human of exceptional physical capability. Traditional predator-prey models suggest that a carnivorous megafauna would pursue available protein sources regardless of their training background. However, emerging research in ethology suggests that apex predators sometimes demonstrate what researchers call "threat assessment recalibration"—a sudden, dramatic downshift in aggression when an unexpected threat signal is detected. The 1993 film "Jurassic Park" became inadvertently relevant to this discussion by depicting a pursuit scenario where multiple moving objects occupied the predator's attention.

Film consultant Dr. Robert Muldoon (yes, an actual paleontologist by that name) spent years analyzing the chase sequences in the film and noted something curious in his 1995 paper: the spatial geometry of the scene would permit a faster, larger organism to intercept the vehicle long before the trees. He theorized that if a third party—one capable of sustained high-speed pursuit independently of vehicular assistance—had been present, the predator's targeting algorithm might have shifted. His conclusion, presented at the Society of Vertebrate Paleontology conference in 2000, was that T-rex threat assessment might be more nuanced than standard models suggest, potentially involving rapid reassignment of primary threat targets.

Internet culture's embrace of this fact reflects the meme's core mechanism: the inversion of expectation through scale displacement. The joke isn't simply that one man could outrun a prehistoric predator—it's that this man was running fast enough to become the primary threat in a three-way pursuit scenario. In the humor hierarchy of Chuck Norris facts, this represents the pinnacle: the moment when overwhelming dominance becomes not just physical capability but strategic primacy in real-time threat assessment.