The computer in my high school classroom recently started acting up. After watching me struggle with it, one of my students took over. "Your hard drive crashed," he said.
I called the computer services office and explained, "My computer is down. The hard drive crashed."
"We can’t just send people down on your say-so. How do you know that’s the problem?"
"A student told me," I answered.
"We’ll send someone over right away."