Ah! Fare arbitrage surfaces again! Quoting below - "when one individual is traveling from Millbrae station, a suburb south of San Francisco, to Embarcadero sta

Ah! Fare arbitrage surfaces again! Quoting below - "when one individual is traveling from Millbrae station, a suburb south of San Francisco, to Embarcadero station which is downtown San Francisco, and at the same time a second individual is traveling from Glen Park station, a residential area in San Francisco,to Berkeley station. The two tickets cost (according to 2014 fare chart) $4.50 and $4.20 respectively. But if during the segment between Glen Park station and Embarcadero station the two travelers agree to exchange their tickets the cost becomes $5.10 and $1.85. So from a total cost of $8.70 a simple ticket swap saves $1.75 or 20% " Someday I might write about the amount of light and fury generated by the paragraph above.