The question is nothing new. How many times did we hear “we can’t change, we’ve always done like that” or “this is the rule so I obey”.
Even if it means to set the cat among the pigeons, I’m sure that with a closer look it would become clear that some so-calles rules are useless if not counter-productive today. I say today because in many cases they made sense when they were edicted but don’t anymore.
He are a few eloquant examples.
You can find the "original" french version of this blog here

