German Lessons in Common Sense #2 and #3

If one chooses to buy a bike, one should also buy a pump and a patch kit. Bike tires go flat and don't magically reinflate.

If said bike tire goes flat and one needs to take the subway, one should think about where one needs to go before one purchases tickets. 3 one way tickets at €2,30 cost more than a day pass at €5,00.