The line
An algorithm read every timestamp, every GPS coordinate, every workout track in our library. 152,425 photographs across seventeen years. This is the line it drew.
The photographs are ours. The travel is ours. The patterns below were surfaced by an algorithm reading signals across seventeen years - cadence, latitude, altitude, heart rate, distance from home. No human can hold 152,425 timestamps in their head at once. The machine can.
Photographs per year, home and away
Seven flat years. Then a step in 2016. A jump in 2019. A retreat in 2024 with a parallel rise at home. The algorithm reads it all from 152,425 timestamps.
Six and a half years of stillness
From 2009 to the end of 2015 the camera moved sparingly. 1,850 photographs across 78 months. Five recurring coordinates: a Bucharest apartment, a family region in north-eastern Romania, the Bucovina monasteries, the rest of Romania, and one outlier - six frames from a July afternoon in 2011 in Catalonia, then nothing international for eighteen months.
The longest stretch the algorithm finds where the camera never registered a frame away from home runs 535 consecutive days, between October 2011 and April 2013. Two more stretches over 500 days bracket it. Three more over 130 days follow.
International travel was not, for our generation in Romania, an ordinary thing yet. The dataset shows the silence more honestly than memory ever could.
Prague, the threshold
The line breaks for the first time on 15 June 2016. Five days, Prague. 1,689 photographs - a rate of 338 a day. The densest photographic intensity of any trip the algorithm finds in our library, before or since.
Not Iceland in summer. Not Hong Kong at New Year. Not Antarctica. Not the 94-day Southeast Asia loop. Nothing has come close. The algorithm reads it as the first deviation from baseline.
What we remember about that week is being astounded. We were 26, abroad for our first city break, and a city that should not have been overwhelming overwhelmed us. The camera caught every minute of it.
2019, the year the line stepped
Three years of rehearsals - 2016 through 2018, mostly Europe, mostly short. Then days away tripled, photos quadrupled, continents covered in a single year went from one to four.
Steps in behaviour rarely arrive smoothly. The algorithm cannot tell you what enabled the step. It can show you, in precise relief, that the step was real and that the line has not retreated to its old level since.
Hiking arrived in 2020 and never left
Through 2017 not a single trip contained a hike. By 2022, every trip did. The line traced on the ground says the same thing in different units.
Iceland received four of its five visits inside the same 28 months that hiking became default. The Romanian Carpathians, which had registered four hikes in the previous two years combined, took 23 in 2020 alone. The volume curve climbs steeply for five years and crests in 2023 at 373 kilometres on foot, the densest year by every trail metric.
2024 reads as a sharp dip - 65 kilometres, the lowest since the habit took hold - and then the line resumes. 2026 has already logged 176 kilometres in the first three months. The trail is the part of the body the algorithm can count.
The years the line ran widest
2021 through 2023 is where the algorithm finds the line at full amplitude. The 2019 step had landed. The hiking habit was running. Every metric we track held at or near its all-time high for three consecutive years.
2021 reached Antarctica via the Drake Passage - the seventh continent, the last one. 2022 logged 197 away-days across six trips, every one of them a road trip, every one of them hike-bearing, every one of them thirteen days or longer. 2023 produced the densest photographic year in the library: 24,110 frames away from home, at 149 photographs per day on the road.
The algorithm reads three years as a single phase. Inside them, the body, the budget of time, and the map were all running at the upper edge of what the dataset thinks is possible.
The line that went home
2024 brought the lowest travel volume since 2018. The story is what the home line did at the same time.
The line that retreated on the road moved into the rooms. Photographs at home in 2024 went past every prior year, including the closed-border years of 2020 and 2021. We had grown more roots.
The algorithm reads it as a settling - not a contraction. Per-day photo intensity on the trips we did take stayed where it had been; the hike count held; the body kept training. What changed was where the line was willing to live.
2026 opened wider than any year before it
A 54-day expedition across Australia, New Zealand, and Singapore in the first three months of 2026. The photo-weighted average distance from home for the year so far: 15,652 kilometres. More than twice the previous highest year, more than fifteen times the 2015 baseline.
The line continues to bend. The algorithm does not predict; it records. What it records is that the line is still moving, and that it is no longer moving primarily west.
The line is the part of us the data can see. The rest is ours.What the algorithm cannot read
What the line will not say
Seventeen years of timestamps and coordinates make a line. The line is honest about cadence, geography, intensity, body, and time. It is silent about everything else.
The algorithm does not know who held the camera or who was on the other side of it. It does not know what was said on the cliff trails, what was tasted at the markets, what was felt when the plane finally landed. It does not know why 2019 happened, or why 2024 was the year the home filled. The numbers are an X-ray. The body is something else.
What the algorithm offered us is a chance to read the shape of our own choices, made one at a time over years, from outside. That is something memory cannot do, and something the 152,425 photographs alone could not show.