What some of you dont realise is what it actually means.
This opinion is recorded in the 15th century collection of homilies written by an Augustinian clergyman called John Mirk in Mirk's Festial, circa Hyt ys old Englysch sawe: A mayde schuld be seen, but not herd. However, children should be told not to have public tantrums since that makes people unhappy, including the children themselves.
But i have met many other kids in shopping centres who have been polite, courtious and reasonable.
Some people really hate little ones but However, we should not be teaching young human beings to be completely submissive and to not express opinions, otherwise they will grow up as gutless, unconfrontational and easily controlled. I am also a child, and I know this.
I looked at the debate on the topic that children should not eat as much salt and sugar, and all the people who posted a comment were saying how kids are so obese these days.
It is a draconian idea that can stunt development 'Seen and not heard' is a Victorian ideal based on the idea that quiet, obedient children are superior in some sense. What it really means!
You can't have passing grades arguing loudly every time you dislike your work.