David went to visit his grandfather, a fisherman, in a rural, village area.

The first day was a Sunday and the grandfather needed to catch some fish.

The fish were quite far away from the shore.

So, early morning, David and his grandfather set off for fishing.

It was an hours journey to reach the spot where most fishes are found.

Although David hadn't met his granfather for 2 years, he didn't know what to talk about.

Anyway, to bring up some conversation, David asked his grandpa, "Granps, do you know what a computer is?"

Grandpa: "No."

David: "I don't believe it! You lose 20% of your life if you don't know that."

David: "Ok, do you know the internet?"

Grandpa: "Nopes."

David: "My God, you lose 50% of your life not knowing and interacting with internet!"

At that time, the winds started blowing real hard.

Now, Grandpa asked, "Son, do you know how to swim?"

David: "hmmm...no"

Grandpa: "Damn. You're going to lose 100% of your life because of that!"