When you think about it...
No one grows up thinking: "I'm passionate about tax law", but the best tax lawyers fly private jets and have a much broader selection of mates than they deserve.
Escape velocity
In aero-propulsion engineering, it has been found that the most amount of fuel per kilometer is burned when a plane is taxi-ing and taking off, not when it is cruising in mid air.
Some shortfalls of conventional wisdom
"I hereby sincerely apply for a job"
"Back in the old days"
Being humble.