From the outside, say if you were a cabdriver watching frantic jaywalkers scramble to cross the street in the final seconds before the light changed, it was only a mundane, urban snapshot: two seeming strangers, with little in common but their flimsy black umbrellas, passing in an intersection, making fleeting eye contact and exchanging stiff but not unfriendly hellos before moving on their way.

But inside was a very different story. Inside, I was reeling, churning, breathless as I made it onto the safety of the curb. Like seeing a ghost, I thought, one of those expressions I've heard a thousand times but never fully registered until that moment.