If Zeno was right, then we'll never quite fall off the cliff.
I hope Zeno is right.
Zeno was bad at calculus. Not everything in math has an intuitive and correct answer.
Infinite processes remained theoretically troublesome in mathematics until the late 19th century. The epsilon-delta version of Weierstrass and Cauchy developed a rigorous formulation of the logic and calculus involved. These works resolved the mathematics involving infinite processes. (link)