Quote Originally Posted by LurkerREM View Post
A person does not have to understand how fuel injection on an automobile works to put in the key and drive it.
When the fuel injector works, you don't have to understand the system involved. But if the fuel injector goes bad and your garage has to spend time trying to fix it, you're only making yourself look like an idiot by shouting at the mechanic to "FIX IT NOW" because you don't understand how much work goes into having to take the engine apart to replace the part.