Epoch AI economist @pawtrammell predicts a challenge to the efficient market hypothesis: NVIDIA's ~25X P/E implies investors expect it to grow roughly as fast as McDonald's "If you look at the price to earnings ratio of NVIDIA, and of a lot of AI-exposed companies, they're not that much higher than for the economy as a whole, like on average, weighting firms by their market cap. Which means that most investors don't think we should be extrapolating NVIDIA's rapid growth over the next few…