On Thursday, I took a break from slogging on this blog–does that make me a Slogger Trogger?– and we drove to Heraclea Minoa, a colony projected (6th century?) by the colonial city of Selinus as a frontier defense against the encroaching forces of the more powerful Akragas (Agrigento). In time, Akragas got the upper hand and took the town, only to lose it in the disastrous struggle with Carthage at the end of the Fifth Century. Sikeliot Greeks, led by the tyrants of Syracuse and Akragas, had defeated Carthage decisively in 480, but their incessant conflicts among themselves, aggravated by...