“I have been thinking about what might happen if they installed clappers to turn on and off the lights in a concert hall. Maybe they could spare the cost of hiring some people for the next rock concert.”

“I have been thinking about what might happen if they installed clappers to turn on and off the lights in a concert hall. Maybe they could spare the cost of hiring some people for the next rock concert.”

“I have been thinking about what might happen if they installed clappers to turn on and off the lights in a concert hall. Maybe they could spare the cost of hiring some people for the next rock concert.”