Validator v3: Fewer Feature Checks, More 'This Day Is Going to Feel Awful'

Itinerary validators, as a category, mostly produce useless pass/fail outputs. Open hours: checked. Distance under twenty kilometers: checked. Budget within range: checked. The plan comes back green, the traveler arrives, and by 4 p.m. on day three they are sitting on a curb in a city they wanted to love, wondering why a technically valid itinerary feels like a punishment. Nothing on the checklist was wrong. The day was wrong.

Fortrip's earlier validators had the same problem. A plan could stack three museums onto a transfer day, schedule a 7 a.m. cooking class the morning after a red-eye into Bangkok, and put sunset at Sintra ninety minutes from the Lisbon hotel without a return plan, and every check would still pass. Technically correct. Emotionally unlivable.

Validator v3 moves from feature checks to felt-experience checks. The validator no longer asks only whether each item is legal; it asks whether the day, read as one sustained piece of time, is something a human body would actually want to do. The shift sounds small. In practice it changes what gets flagged on almost every plan that comes through.

It pushes back on transfer days carrying a second itinerary. A morning train from Florence to Venice already costs four hours of attention: the bags, the queue at the track, the canal-side hotel check-in that does not start until three. Layering the Doge's Palace, the Accademia, and a glassblowing demo on top of that train, as earlier validators happily did, is two days stacked into one. The validator now reads transfer days as half-days and refuses to fill them like full ones.

It flags sunset spots stranded from the bed. Sintra at 18:45 is one of the prettiest hours in Portugal. It is also a ninety-minute return to a Lisbon hotel after dark, and one missed train turns into a two-hour wait. A previous validator confirmed Sintra was open. v3 reads the back half of the evening — the train schedule, the walk from Rossio, the dinner reservation that now has to slide to 21:30 — and either re-paces the day or flags it.

It catches fatigue stacking the morning after a long flight. A 7:30 visit to the Tsukiji outer market the day after a Tokyo arrival at 22:00 local time is the kind of optimism that survives planning and dies on the ground. The validator now treats the first morning after a red-eye or a same-day intercontinental flight as a soft slot. Anything before 10 a.m. has to earn its place; a market that peaks at 7:30 does not, on that morning, earn it.

The common thread is simple. The validator is no longer asking what is legal. It is asking what the day will feel like by the end of it.

The test is a short one. Paste an existing itinerary — one already written, one the traveler is half-sure about — and read the critique. The things v3 pushes back on are almost always the things the traveler had not quite let themselves notice yet.