You are misreading into my statements, and putting words in my mouth. Perhaps I was not clear enough. But I only took these examples to demonstrate how dynamic

You are misreading into my statements, and putting words in my mouth. Perhaps I was not clear enough. But I only took these examples to demonstrate how dynamic these things are. If you can construct a hypothetical that turns things one way, I can just as easily create an equally plausible scenario that turns things the other. The point of my exercise was simply to demonstrate that, not to advocate for some utopia. Current implementations of free migrations don’t come as some experiments, they come from policymakers recognizing the benefits of free movement of people. This is one of the fundamental rights (the four freedoms) within the EU (or, to be more accurate, the Schengen Area). Also, like I said, free migration won’t come all at once. The EU currently has free migration within a certain area. I hope this area will gradually expand (though I’m pessimistic it will reach far outside of the continent). Similarly free migration for the USA might start with Canada and Mexico, then expand to the Americas, and the Pacific, then maybe merge with Europe’s, Africa’s, etc. Each expansion will, no doubt, be met with fierce resistance from xenophobes, so you don’t have to worry that this would happen quickly. If I’m wrong (which I probably am; as my hypotheticals were never meant to be read as predictions) this policy can easily be slowed down, and even reversed. However, history and current implementations would suggest that there is at least little harm and potentially many benefits we are missing out on by keeping our migrations so restricted.