When You’re Running Late…
You know that McCracken’s First Law applies:
The strength of the headwind is directly proportional to how late you are.
If you try to cheat, by grabbing a quicker, sleeker, lighter bike (reasoning that you’ll easily make up the time required to get changed at the other end), McCracken’s Second Law comes into play:
The probability of getting a puncture approaches 100%. Said puncture will occur just far enough from home that you can’t go back & swap for another bike. Rims & tyre will be grimy enough to make your hands properly filthy.
So guess what happened to me last night.