Aug. 23rd, 2007
OK, how about if in a hypothetical model of population growth and distribution, we include something for net migration based on:
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
OK, how about if in a hypothetical model of population growth and distribution, we include something for net migration based on:
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
OK, how about if in a hypothetical model of population growth and distribution, we include something for net migration based on:
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
Relative per capita income of nations, on the assumption that people usually move to places where they think they can do better.
[Placeholder: I need a measure of non-economic attractiveness but I can't think of a word for it]
Something modelling the barriers to emigration, by nation.
Something modelling the barriers to immigration, by nation.
I suspect that if you try to model how these change (the fact that nation that is relatively attractive in one century can become much less attractive in the next, or that nations that get lots of immigrants tend to go through pro- and anti-immigrant cycles) it becomes unworkably complex.
Although what I find most interesting is how
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.
Although what I find most interesting is how
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.
Although what I find most interesting is how
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.
Polluted Dead Star Indicates Planets Like Earth May Have Formed Around Other Stars, UCLA Astronomers Report.
became
Dead Star Found Polluted By Earthlike Planet.
The text of the second article isn't at all what the title promises.