At his own blog, PM writes:So why were my undergrad classes so much more educational for me? The simplest explanation is just that this was the second time I'd gone through the material, and so the review made clearer connections that had been obscure. The more profound difference, though, is that undergrads are more incentivized to ask questions. Graduate students are vastly more risk-averse about asking dumb-sounding questions, not least...
