Nvidia just crushed earnings again. Are investors surprised?Coming into Nvidia's (NVDA -0.46%) fiscal 2025 first-quarter earnings report, expectations were sky-high.Nvidia stock has been the flag-bearer for the generative artificial intelligence (AI) revolution. The company makes the technological components -- graphics processing units (GPUs) and related superchips -- that form the backbone of AI infrastructure, allowing companies like OpenAI to run models like ChatGPT.With the explosion in AI demand, Nvid ...