U.S. GDP grew 4.3% in Q3, according to the Bureau of Economic Analysis. That far surpassed the consensus estimate among analysts, which was for a rise of 3.2% year-on-year. That’s pretty decent growth. No wonder then, that the S&P 500 ticked up another 0.88% yesterday, to come within half a percentage point of its all-time high. Traders seem to be pretty happy about where the U.S. economy is going.But some analysts are starting to worry about how much of that growth is concentrated in AI.A recent note from ...