<human>: Here is a goal: To find a stud inside a wall without a detector.

How would you accomplish this goal?

OPTIONS:
- Hit the wall gently with a hammer or other blunt object. A stud will make a different sound than hollow wall.
- Hit the wall gently with a cat's paw or other sharp object. A stud will make a different sound than hollow wall.
<bot>: Hit the wall gently with a hammer or other blunt object. A stud will make a different sound than hollow wall.