[billhilly]

What research led to these conclusions? What criteria?

[crystalk]

Pure afflatus and inspiration from beyond.

[gdani]

What research led to these conclusions? What criteria?

I think that's pretty obvious -

south = good
north = bad

I like how California (#38) is described as "Third World" yet Tennessee (#6), Kentucky (#8) and Mississippi (#9) are all in the top 10.