Bike Girl made a mistake this week that only a novice makes. She did not properly maintain her bicycles. Yes, that's a plural. Bike Girl was nearly late to work because not one, but two bikes were out of commission.
One might say, "I thought Bike Girl had N+1 Bikes and could therefore always hop on a trusty cycle and ride off into the sunset." But one may not be aware that Bike Girl has been down-sizing her fleet. She now technically has 3 bike FRAMES, and only 2 sets of wheels. But that is not the issue.
The issue is, our fearless protagonist did not think to pump up her tires until 5 minutes before the last possible moment she could walk out the door in order to get to her destination on time. At that point, Bike Girl's pump decided to fail. Actually, it was a big "F" Fail. The pump let all of the air out of her tires, and would not put air back in. Bike Girl's attempts to fix the problem Failed. This happened on all four of Bike Girl's wheels as she tried to interchange the wheels to get a complete set.
By this point, Bike Girl was late. She thought about using her fancy schmancy CO2 containers to fill the tires. But being already late, and thinking about how much CO2 containers cost, Bike Girl decided to hop in the car instead.
The moral of the story is, one should check one's steed thoroughly when putting it into the barn at night. That way, when one needs to get going in the morning, one's trusty steed is ready to ride!