Pedro Domingos

so if at constant quality US univ are more expensive than EU ones, what do you think makes the US system less efficient?

Not constant: US universities are both better and more expensive than European ones.

Doctoral programs in the top 50 universities in the US are good. But good undergraduate and Master-level STEM education in much of Europe is better than in almost all US universities. And they largely public and free, or private and almost free (by US standards).

That's why I pay taxes. Health and Education.

Plus infrastructure, social programs, and every program that demonstrably has a high return on investment for society as a whole. I just wish the US didn't overspend as insanely on defense.

That's rich. The US bears the burden of defending the free world, and Europe gets to free ride on it. It's disgraceful. (And Europe also gets to free ride on the innovation that comes from the US, and even then the per capita income is much lower.)

As an Indian I say thanks to the US. Europe is fun to visit as a tourist but there is nothing comparable to the US when it comes to giving a chance to talented ppl. A Mongolian whiz kid gets noticed and picked up by MIT not by Europe. Obama would have been a door man in Germany.

Well, a former PhD student of mine from Mongolia is now a research scientist at FAIR-Paris. He wanted to stay in NYC, but the US wouldn't give him an H1-B visa. Pretty much invalidates your entire claim ;-)