The “Tortoise and Achilles” paradox is a logic puzzle by the 5th century BC Greek philosopher Zeno of Elea. It depicts a race between the swift Achilles, and a tortoise given a head start. Zeno argues that Achilles can never overtake the tortoise because the distance between them can be infinitely divided, requiring Achilles to take an infinite number of steps.

Here's how the paradox works: Achilles must first reach the tortoise's starting point, but by then the tortoise has moved ahead.

Competitors are given equal chances and Achilles carries the same shield, used naturally by the turtle, providing defense and evasion.

After all, even an agile Achilles can be as slow as the tortoise and the tortoise - as elusive and fast as Achilles.