> I fail to see the difference.. But you said "something about members of a group". Y in the first case is a group (a population), Y in the second case is not.

> I fail to see the difference.. But you said "something about members of a group". Y in the first case is a group (a population), Y in the second case is not. Maybe statements about people, or groups of people, conventionally refer to the average, mean etc. but not necessarily about concepts such as "porn". > orthogonal to what I discussed here.. Your last comment says "do you really believe.." so I stated my opinion in response to that.