A father and his small son were out walking one afternoon when the youngster asked how the electricity went through the wires stretched between the telephone poles.
"Don't know," said the father. "Never knew much about electricity. " A few blocks farther on the boy asked what caused lightning and thunder.
"To tell the truth," said the father, "I never exactly understood that myself."
The boy continued to ask questions throughout the walk,none of which the father could explain. Finally, as they were nearing home, the boy asked,
"Pop, I hope you don't mind my asking so many questions... "
"Of course not", replied the father. "How else are you going to learn?"