The evening air in Milan was warmer than I expected for this time of year. The city stretched out below our hotel balcony, lights beginning to glow in the distance while the last traces of daylight lingered against the pale sky. From this height, the streets looked calm, though I knew they were still alive with movement. Cars slipped through narrow lanes, people walked home with shopping bags swinging at their sides, and the low hum of voices rose every now and then when the wind shifted toward ...