Is this like some scale-independent version of Heisenberg's Uncertainty Principle?

There are definite costs to this in terms of continued US taxation as an expat, especially if there isn't a tax treaty in place.

Costa Rica doesn’t tax foreign income. But logically it only makes sense to establish residence there if I am not working. CAJA - their healthcare system would be about the same price as my employer provided healthcare.

I already don’t pay state tax living in Florida and I would pay federal tax either way.

Who's legally responsible once someone's agent decides to SWAT someone else because they got into an argument with that person's agent?

Those poor people voted for something for which they were explicitly mislead. The results of Brexit have in no ways made their lives better.

In other words "democracy" - people with an agenda tell their version of its benefits. Saying "the vote was invalid because the poor uneducated people were too stupid to realise they were being lied to"

Binding people to a shared worldview due to a fear of an unsuccessful afterlife?

History says: proved useful.

As someone coming back to C++ after more than a decade away, do you have any recommended resources on C++20 or open source projects you've seen that utilize the language this way?

Would you have gone to the streets for it?

He's been talking about doing it since he was inaugurated.

Don't be so sure of that. Network effects are still subject to tipping points.

The economic benefits are clear - what social costs are you taking about?

The economic benefits are really not clear; at least not without caveats and clear conditions for the advanced skills that make a migrant beneficial.

This is if you believe that lower wages for high skill work is not an issue.

However high migration rates lower social trust, this is well studied.

If you take a smaller example, hiring internationally vs domestically. If you have to go domestic then you might have to settle for a less ideal qualification, requiring more training.

This is repeated everywhere, so companies that train better are more likely to succeed. Leading to conditions that encourage upskilling for locals overall.

Importing people short circuits that idea.