[justicezyx]

I am amused that such statement is even possible, as if, someone just lost their common sense and start to reason China in a way that is exactly opposite of what they believed to be common sense.

To be fair, I spent first 24 years of my life in China. Your idea were never appeared in any form of discussion when I was there. I did not even fancied about such explanation.

All in all, I assume you want to have a reasonable discussion.

To your point, no, those bars are not for preventing staff falling.