You haven't had statistics and probability in school yet, I suppose. That comes at higher levels of education if you chose to continue. Highly recommended.
I'm well educated and familiar with the concept of statistics, but thanks for the assumption! In a debate concerning manners, politeness etc I found it ironic that someone would resort to profanity. Maybe that's simply because he lacks the capacity to contribute anything. Hence my tongue in cheek comment.
I understand that Polish people are straight forward that's not the issue, possessing above average intelligence I'm able to separate straight forwardness from manners. I've travelled widely and experienced a number of different cultures and I can honestly say that my opinion of Polish people is that they lack manners, and opinions are cultivated by experiences. I used an example to illustrate my point i.e. a family being invited for a meal and none of them offering a word of thanks but I could have used others. I have never experienced this with any other culture, it gives the impression of arrogance and that the invitation was simply expected.