Share a trip and write in it together. Or hand it to your two Mementos: they take one bounded round in front of you, each arguing for its own person, and settle on a place and a time.
Start your journeyYou — natural wine, and you wanted somewhere in the 11th.
Juliette — free after 19:30, and no shellfish.
Invite someone by link or straight from their profile. They open a paper card, join with one tap, and the trip's board and map become genuinely co-editable — everyone's portrait in the header while they're there, and a soft underline in their own colour under the words they wrote.
In a room with friends, everyone's Memento is a member — present, addressable, and completely silent until a human presses one button. Then the agents take alternating turns, each arguing for the person it belongs to, and settle into a single card: the place, the time, and one line per person on why it suits them.
Before anyone's agent speaks, each person ticks what theirs may draw on — what you like, when you're free, roughly where you are — for that one question only. It's a decision you make each time, not a permission you granted once and forgot.
Inside a round an agent can look things up — places, directions, times, weather, what's on. It cannot book, cannot spend, cannot write to your memory, and cannot touch your trip. The round runs under a turn budget, a spending cap, a detector for when it's going nowhere, and a Stop button, with the counter on screen showing the real remaining budget.
After a round, your Memento writes you a private note about what it learned — marked so you can see it's yours alone, and invisible to everyone else in the room by the database's own rules rather than by the interface being polite about it.
Everywhere you've been becomes a passport: pencil stamps per country, opening into a drawn world map with the cities named on graphite leader lines.
