[DouglasKC]

2. Why did Dr. Heimlich have to develop a maneuver to dislodge food particles from people’s wind pipes?

Because people tried to breathe the food instead of eating it. It's not a design flaw but user error.

[abishai]

Because people tried to breathe the food instead of eating it. It's not a design flaw but user error.

Perfect! Sounds right to me.