And then encountered the latest fuckery. The 50 lira cards we purchased are supposed to cover three trips, which because there were two transfers involved in getting to the airport, I presumed would cover our journeys on the M2, M7, and M11. Alas, the M11 counts as TWO journeys. So, we had insufficient fare. And, because I only had a 100-lira banknote on me, I had no way to purchase a new fare.