MEM: "Turn off the engine?"
ATC: "Do not turn off the engine. Your aircraft is carrying 283 passengers. You need to lower the flaps on the wings in order to reduce your ground speed so that you do not rash the plane."
MEM: "So I need to turn off the engine, right?"
ATC: "Please do NOT turn off the engine. 283 people will DIE if you turn off the engine. It is imperative that you *leave the engine running*"
MEM: OK, the engine is off. What do I do next?
--citizenbleys, comparing tech support with landing a plane, here.