Samuel,
If you believe implicitly everything which emanates from the experts in ivory towers you are going to be disillusioned repeatedly. You can obtain any number of conflicting views from very many sources including think tanks, academic institutions etc all of which are later shown to be in error when compared with the real world.
Only last year it was pointed out that Australian Taxpayers paid out $150 million more welfare payments to kiwis in Australia versus that paid to Australians on welfare in NZ. So much for reciprocal benefits.
We offered to pay for our own over there if you paid for yours over here. But you lot would rather sponge $150 million off us.