What makes this dish deceptively chef‑y” is that it quietly uses three separate levers of flavor concentration at once: evaporation (the tomatoes lose water), caramelization (the beans brown), and emulsification (starch + fat + acidity = a glossy sauce). You don’t see any of these happen, but when you toss it all at the end with pasta water and lemon, it suddenly behaves like you spent an hour reducing a sauce on the stovetop.