The Pillow on the Windowsill.

The equipment is minimal and has not changed in a century: one pillow, slightly flattened by service, placed on the windowsill of a ground-floor or first-floor window; two forearms, folded upon it; one head, held at the precise angle of long-term surveillance. The window is open. The street is below. The watch has begun, and it will not end until the light does.

You have seen her, whichever old country you come from, because she is stationed across most of Eastern and Southern Europe and was stationed there long before anyone thought to find it picturesque. In my grandmother's town the position was staffed continuously, in shifts nobody organized and nobody missed, by women who had finished the morning's work and had no intention of pretending the afternoon contained more of it. The pillow is the giveaway, and it deserves a moment of respect. A person who leans on a bare sill is glancing out. A person who fetches a pillow first has filed a flight plan: she intends to be here for hours, and she has arranged for her elbows what a general arranges for his troops. The pillow is not for comfort. The pillow is infrastructure.

Ask what she is watching and you will get the wrong answer, because the answer is everything, and everything sounds like nothing. She is watching a street on which, by industrial standards, no events occur. A neighbor passes with bags of unknown contents, which are assessed. A car slows, fails to park, and leaves, and its failure is noted. Two dogs conduct their diplomacy. A child falls off a bicycle at the corner, at the exact distance where falling is educational rather than dangerous, and is monitored back onto the saddle without a word. The municipal water truck comes at four, as it came yesterday, and its punctuality is confirmed the way a stationmaster confirms an express. Nothing happens, in other words, at the rate of roughly forty things an hour, and she receives all of them.

The modern gaze finds her poignant, which is the modern gaze's usual mistake. She is not lonely up there, or not more than anyone; the window is not a substitute for life but a box seat at it, and the sill women of a street generally know one another's positions and trade findings later, a distributed newsroom with excellent sourcing and no deadline. Neither is she idle in the way her century would have counted idleness, because the watch had functions no one needed to name: children monitored without surveillance, strangers registered without checkpoints, the whole soft security of a street that knows it is seen. Urbanists eventually rediscovered all this in the 1960s, when Jane Jacobs wrote of the eyes on the street that keep a neighborhood safe better than any patrol, and received a reputation as a visionary for describing, in American prose, what my grandmother's forearms had been doing since before the war.

But the deeper function was never civic, and here the dispatch must be honest. She is not at the window as a service. She is there because watching the world go by is among the primal human satisfactions, older than every doctrine of usefulness, and she belongs to perhaps the last generation that permitted itself the pleasure without a screen as chaperone. Consider the posture the century replaced her with: the same head, the same tilt, aimed down into a palm, receiving a street somewhere else, curated by machinery, refreshed on command. The sill woman's feed cannot be refreshed. It runs at the speed of the actual, which is mostly the speed of nothing, and she has the patience for it, and the patience is the whole skill. Her network has one channel and infinite programming. Ours has infinite channels and, on the evidence of our faces, no satisfaction whatsoever.

The custom is thinning now, as the ground floors fill with offices and the grandmothers move, or are moved, to blocks whose windows overlook parking. Here and there it holds: a pillow on a sill in Cluj, on the small streets past the market; whole avenues of them still, I am told, in the towns of the south. Walk under one late in the afternoon and do the correct thing, which everyone once knew and is worth reprinting here as a public service. Look up. Nod. Say good evening. You will receive a nod in return, unhurried, from a woman who has seen you coming for two hundred meters and formed, in that time, a complete and largely accurate assessment of your business, your family, and your shoes; and the street will hold you a little more firmly for the rest of your walk, because you have been entered, with everything else that moves, into the ledger of the only institution that has never once closed for the day.