It’s the most effective strategy because it incurs the least cost for the most effect. It deals with it quite nicely, and there is very little social disturbance.
If “disturbance” (not “change” or “revitalsiation”) is a cost, and if homegeneity is a benefit...yes. If homegeneity
is bad, and revitalisation is needed, the opposite follows. You don’t have a neutral c/b analysis there, it is loaded.
You could do a polictically neutral analysis in terms of how man dollars or yen immigration brings in, but it is by no means guaranteed to come up with zero as the optimum figure.
If “disturbance” (not “change” or “revitalsiation”) is a cost, and if homegeneity is a benefit...yes. If homegeneity is bad, and revitalisation is needed, the opposite follows. You don’t have a neutral c/b analysis there, it is loaded.
You could do a polictically neutral analysis in terms of how man dollars or yen immigration brings in, but it is by no means guaranteed to come up with zero as the optimum figure.