What I meant is a world without any barriers whatsoever for the circulation of people. Each country would have border checks for things like explosives, heavy drugs, and weapons, but apart from that everyone would be allowed in, always. I'm not sure about economy measures, trade barriers, and circulation of goods, though.

But please, feel free to interpret "world without borders" however you wish! ;)

Loads of people want to get to rich countries for various reasons:

• no war
• less crime
• better economic prospects
• no persecution
• no famine

The list is almost endless.

Should we, in countries not affected by such problems, accept these folks that want to get away for whatever reason?