I've seen some muddled thinking in my time, but your reply tops the lot, and you are not just confusing everyone about what you are saying, but confusing yourself more. I suggest that you check again your original post, where you yourself admit 'I know that this is a generalization'.
As to your final piece of homespun philosophical nonsense of 'An observation can be viewed in different ways, a fact is a fact'. I fell about laughing, but I can see why you keep confusing yourself over observations and facts, particularly with no recall whatever to evidence.
If you cannot work out what the Mccanns have to do with this issue then perhaps I can once again remind you what you said in your original post 'children that appear to come from a more "middle class" background seem to have the ability to sit with their parents/grandparents in a restaurant/pub and be able to hold a conversation and also eat a meal in a proper fashion using the cutlery as it was designed and not with their fingers?." In the case of the middle class Mccanns, they obviously do not.