Effort is important, but knowing where 2 make an effort makes all the difference

A ship engine failed. The ship's owners tried many experts, but none of them could figure how to fix it.

Then they brought an old man who had been fixing ships since he was a young.. He carried a large bag of tools with him, & when he arrived, he immediately went to work. He inspected engine very carefully.

The ship owners were there, watching this man, hoping he would know what to do. After looking things over, the old man reached into his bag and pulled out a small hammer. He gently tapped something. Instantly, the engine lurched into life. He carefully put his hammer away. The engine was fixed!

A week later, the owners received a bill from the old man for 10,000 dollars.

"What?!"the owners exclaimed. "He hardly did anything!"
So they wrote the old man a note saying, "Please send us an itemized bill."

The man sent a bill that read: Tapping with a hammer: $2 Knowing where 2 tap: $9,998

Moral of story is:Effort is important, but knowing where 2 make an effort makes all the difference