The elevator resident
A person lives on the twentieth floor. Each morning they take the elevator down. Returning home, they usually ride to the twelfth floor and walk the rest, but on rainy days they ride all the way to the twentieth. Why?
Lateral challenge at easy difficulty.
Hint
What changes on a rainy day besides the weather?
Answer and method
The person is short and can reach only the twelfth-floor button. On rainy days, an umbrella lets them press the twentieth-floor button.
Reusable reasoning moveQuestion the assumed capabilities of the actor, not only the mechanics of the setting.