Why did Zeno trust reason over ordinary perception?

Zeno of Elea trusted reason over ordinary perception because he believed that the evidence provided by our senses—specifically the belief in a world of plurality and motion—was fundamentally inconsistent and contradictory.123

As a proponent of the Parmenidean doctrine, which posited that reality is a single, indivisible, and static "One," Zeno sought to defend this view by demonstrating that the alternative—the common-sense assumption that many distinct things exist and move—leads to logical absurdities. Through his famous paradoxes, such as the Achilles paradox or the arrow in flight, he used reductio ad absurdum to show that if one accepts the existence of motion or plurality, one is forced to accept impossible conclusions, such as an object being both at rest and in motion, or an infinite number of points being traversed in a finite time.1345

Compelled to choose between the evidence of the senses and the dictates of logic, Zeno prioritized reason, maintaining that the intellect can grasp truths about the nature of reality that perception fails to accurately represent.62