I think that the main problem is that sometimes generalizations are seen as something that strips something from the unique individual traits that it might possess. This is not true, a generalization has that name precisely because it shows the general characteristics that something possess,
without limiting it to those. Saying "Nigerian people are black" is a generalization that merely points out that the
average Nigerian person has black colored skin, it doesn't try to claim that every and each Nigerian person is black, or that they are
nothing but black. This is simply pointing out a
general reality.
I think by now that the problem lies in the very concept of generalization. It seems that a lot of people do not understand that a generalization needs to have valid logic in order to be correct and functional, there seems to be a lot of misinformation. The problem is that many people think that generalizing is the same as this:
http://en.wikipedia.org/wiki/Hasty_generalizationAs you can see, that is nothing but a collection of logical fallacies, they don't follow a truly logical model. To reach valid generalizations one needs large and diverse samples from which to gather data.
A generalization does not pretend to limit its subject, nor claim that all of the individuals have to be the same, it's nothing but an average.
A hasty / faulty generalization
will pretend to limit its subject, and claim that all of the individuals have to be the same, it's nothing but a fallacy.
By now it should be pretty clear that there is a big difference between the two approaches. It's just like if in the first example, people were talking about Metal and mentioned
Iron Maiden and
Falconer, while in the second example, they would mention
Korn and
Limp Bizkit. Now tell me, wouldn't you be frustrated if someone told you over and over that Metal is made by the latter bands instead of the former, all because they are misinformed and will tell you that Metal is like
Linkin Park? I guess most of you would agree that those bands are not representative of Metal because they are not Metal at all, or at best, they are faulty Metal....
Guess that now you know how I feel when I can't seem to get the point across about what constitutes a valid generalization.