The more you have it, the less you see. What is it?
Darkness
THIS IS AN ANCIENT INVENTION THAT IS STILL USED ALMOST EVERYWHERE TODAY. IT ALLOWS PEOPLE TO SEE THROUGH WALLS. WHAT IS IT?
WINDOWS
MR. SMITH HAS 4 DAUGHTERS. EACH OF HIS DAUGHTER HAS A BROTHER. HOW MANY CHILDREN DOES MR. SMITH HAVE?
FIVE CHILDREN