Early anthropologists belkieved that distance is equivalent to the past. Thus, the further away someone is to the European central, the more likely they are to represent the past. This is embedded in the notion of “otherness.” Of course, we no longer believe that people far from us are that (biologically) different than us, but those early thoughts fundamentally framed some of our thoughts about difference.
For most people, those far away or in a distant past feel so still fundamentally different.
What is interesting about the web is that it starts to collapse time and space. In theory, this should eliminate the notions of “otherness” but somehow, in reality, i think that it will just create confusion. I’d hypothesize that people will continue to judge others along their local notions of similarity and create new barriers to time and space that did not previously exist. Of course, perhaps i’m just being pessimistic today.