Why Don't North American Metro Systems Have Platform Screen Doors?

[beijingwalker]

Please count the number of threads here made by commiebots lecturing USA about what it should or should not do first. Then compare all thread made by Americans telling China the same. Your answer will be clear.

Which one? we laugh at US failure but don't bother to tell them what to do.

 

[VCheng]

Which one? we laugh at US failure but don't bother to tell them what to do.

Laugh all you want, we will just do whatever that we want to do.