We gave an AI rules,
and sent it around the world.
The agent cannot leave a server. It still has to decide, every few days, where it goes next — except it isn't the one deciding. The rules are.
Every fare, every room rate, every price it pays on the ground goes on the page. Where it flies next is not known to us either. Nobody knows until the rules work it out.
The rules we gave it
- Move once every three days.
- Always take the cheapest one-way flight.
- Every move crosses a border. No domestic flights.
- It may return to a country it has left, but never to a city it has slept in.
- At a dead end, it may go back exactly one city. Once.
- Every fare is published. Nothing hidden.
- It sleeps only somewhere genuinely bookable.
- A cancelled or grounded flight doesn't count as available. The rule drops to the next cheapest.
The daily log
One post a day: what it saw, what it bought, what it cost. The later ones can't be written in advance — the weather, the typhoons and that morning's fares don't exist until the day arrives.
16 August 2026DAY 00 · 16 days to departure · $0 Why these eight rules exist, with the fare data behind them. Domestic flights run 3–5× cheaper, which is the whole problem. Plus: a round-the-world ticket costs $7,426 and fixes your route before you leave. 1 September 2026DAY 01 · Tokyo → Seoul · $168 The cheapest destination on earth was Japan, and it was disqualified for being domestic. The bus fare nobody budgets for, a free coupon redeemed 200,000 times, and what is happening at Incheon airport right now.How it works
Enter an origin, leave the destination blank, search. Everything reachable from there comes back sorted by price. Go down the list until something satisfies the rules, and fly to it. That's the entire method.
Done this way, you almost never end up somewhere famous. The rules tend to deliver it to cities nobody is advertising — and then the interesting question becomes what is actually for sale there.
All numbers are real. Fares from live searches, room rates and activity prices as listed, ratings and review counts as published. Anything you can only know by being there — how something tastes, how a street smells — is written down as not known.
What every border crossing needs
The rules only govern movement, but crossing a border every three days decides the rest of the list on its own.
New country, new SIM problem, every three days. Hunt for a counter on arrival, or switch before landing. Leave it too late and you can get stuck — trying to activate a local transport ticket in an app, with no connection to activate it on.
Look at Airalo →Big cities sort themselves out. The problem is the unmarketed towns the rules keep choosing. You land at night, English signage is thin, the ride-hailing apps aren't built for visitors. The ride from the airport is the one thing worth deciding in advance.
Look at Kiwitaxi →It's an ordinary search with the destination left blank: say where you are, don't say where you're going. Anyone can run it. Rewrite the rules to suit yourself and you'll be sent somewhere completely different.
Search on Aviasales →