Let me end off by saying there's a difference between being "fine" and "exceptional". If you're content with the former, then that's okay, no problem there -- cutting off immigration will be okay. America will survive, there won't be an apocalypse. Like Japan right now -- it's got mediocre companies with a mediocre economy.
Many papers are written exclusively by Americans, but they're often not the best. That's what you're going to have to be content with, if you shut off immigration. Being okay, but not the best.
Imagine that those researchers couldn't go to the US. Imagine instead of Google DeepMind beating Lee Sedol it was a Canadian or Chinese company. Imagine if the first company to roll out mass self-driving cars would be Didi instead of Tesla. It's an inevitability, once all the top minds in the world go to companies outside the US. And as I said, it's not horrible for America, the country will surivive and do okay, but there'll be jobs lost and innovation will go somewhere else.
Many papers are written exclusively by Americans, but they're often not the best. That's what you're going to have to be content with, if you shut off immigration. Being okay, but not the best.
Imagine that those researchers couldn't go to the US. Imagine instead of Google DeepMind beating Lee Sedol it was a Canadian or Chinese company. Imagine if the first company to roll out mass self-driving cars would be Didi instead of Tesla. It's an inevitability, once all the top minds in the world go to companies outside the US. And as I said, it's not horrible for America, the country will surivive and do okay, but there'll be jobs lost and innovation will go somewhere else.