While Marathon became a foundational myth for Athens, for the vast Persian Empire it was a minor setback on a distant frontier. This reveals how superpowers and smaller states can perceive the same event with vastly different scales of significance, impacting their subsequent strategic responses.

The historical lesson of Thucydides' Trap is misunderstood. The Peloponnesian War was caused by the hegemon, Athens, abusing its allies, leading them to rebel. This parallels current US tensions with its own allies, rather than its conflict with a rising China.

The idea that war causes immense suffering is not a modern sentiment. Ancient Greek sources, including Homer and later playwrights, consistently held a dual perspective: they celebrated heroes for their capacity for violence while simultaneously depicting the profound misery war inflicted on all people, including the enemy.

Before Marathon, Greeks feared the Persians. Afterwards, Athenian confidence surged, and they began using the word "barbaroi" (speakers of gibberish) to frame their powerful enemy as a numberless, alien horde. This linguistic shift marks a key moment in the creation of the "civilized vs. barbarian" dichotomy.

The victory at Marathon, framed as a triumph of liberty, ironically propelled Athens to become an imperial power. They used their newfound military dominance to extract tribute from other Greek cities, funding projects like the Parthenon through the subjugation of their supposed allies.

Modern retellings often insert motives like controlling trade routes for the Trojan War. However, ancient sources are unanimous that the war was fought solely to recover Helen. This rationalization reflects modern geopolitical thinking, not the values and beliefs of the ancient world.

Thucydides' detailed account of the Peloponnesian War undermines the simplistic "trap" model. The war resulted from a host of complex factors involving multiple states and specific grievances, not just the dynamic between a rising Athens and an established Sparta.

The sacking of the Persian city of Sardis by the Athenians was a shocking affront to King Darius, the world's most powerful man. This act of aggression by a little-known group created an insult so profound that a massive military response became politically necessary to maintain credibility.

In The Odyssey's world, storytellers weren't just entertainers; they were guardians of the moral order. Agamemnon left a bard to keep his wife faithful through "improving stories," and only after the bard was removed could she be seduced, illustrating the perceived power of narrative.