Builder Awareness

Riddle: What do builders have to look out for before constructing a building and surgeons have to look out for while performing a surgery?

Answer: The skeleton.

Source: https://www.riddles.com/index.php/11254

What do builders have to look out for before constructing a building and surgeons have to look out for while performing a surgery? — Builder Awareness by BallastBoomerang v1.

Riddle: What do builders have to look out for before constructing a building and surgeons have to look out for while performing a surgery? Answer: The skeleton. — by BallastBoomerang v2.