That's my question. I'll inveigh once people respond...
Some 'potential' guidelines....
1) What is an Asian 'intensionally', in other words, what is the definition or 'essence' of being Asian? In other words, this is the question asking "WHY" do we call someone an Asian.
2) What is an Asian 'extensionally', in other words, if there were a set of all Asian objects-which-are-also-people, where would they be from? So this is more along the lines of, if I asked you to point out some Asians to me, you'd ostend in a certain direction and show me them, without necessarily explaining the 'why'.
3) Once we've 'understood', according to each poster, or each group of like-minded posters, what Asians are... can we justify using "Asian" as more than a geographical marker, provided the geographical issues are sorted out? Meaning, can we possibly assert an "Asian" culture? Or are there regions in Asia which are so different from each other that the "Asian" culture breaks down upon analysis?
3a) Which groups are excluded from Asia? WHY? Is it a consistent system of dividing the world up into continents and, moreover, major cultural groups?
I promise (not that anyone's begging me to) that I'll post my own thoughts on this in a little while... I just want to see what everyone else is about before opening my own big mouth. Plus, some may already have ideas about what I think.