Dont get offended ...please
Read your posts instead
You have alwayes a "top down " attitude
" It is wrong...full stop " without even spending a words of explanation
Not only in this occasion

It is not the way to behave in a forum where nobody knows each other so nobody should play the role of the professor

btw
My sentence "You must study a little bit more, young lad ..." was simply a little bit ironic
It is the answer given by Einstein in a seminar to a young guy who was arguing with him
Since my name is Alberto was just joking