For instance, when someone describes going to school as “traumatic,” they often simply refer to it as a negative experience. This is not to say that everyone who went to school never had a traumatic experience; however, some individuals appear to overuse the term. Another example could be considering being lightly pushed into a locker as “traumatic.”
I think you might need robots in order to build magnetised rail. I have a feeling the tolerance is tighter than humans can manage. And maybe you need rare earth metals too? I don’t know anything about HSR technology but I think there’s a practical reason it wasn’t built before robots and global supply lines.