A man walking in the desert approached an old Bedouin gentleman and asks,
“How long will it take me to walk to the nearest oasis?”
The Bedouin did not respond.
“I said, how long will it take me to walk to the nearest oasis?” the man asked,
a bit more loudly this time and enunciating his words very carefully in attempt
to communicate more effectively.
The Bedouin still did not respond. The man shook his head in frustration, turned,
and began to walk away.
The Bedouin called out, “It will take you three hours!”
The man spun around to face the Bedouin. “Couldn’t you have
told me that when I first asked?”
“No,” replied the Bedouin. “I couldn’t answer until I knew how
fast you walk.”