Why we built it
Everyone at that party had a camera in their pocket. Everyone took pictures. And then the pictures went into forty separate camera rolls and stayed there, because sending forty photos to a group chat is a chore and nobody does chores on a Sunday.
The other half of the problem is subtler. Once a photo can be seen immediately, it stops being a record and starts being a performance. People check the shot. People retake it. Someone is always slightly outside the evening, curating it.
A disposable camera solved both of these accidentally. You could not see what you got, so you stopped worrying about it. You handed the camera to someone else. And two weeks later an envelope arrived with the whole night in it, blurry and badly lit and perfect.
Capsule is that, without the trip to the chemist. Everyone shoots into one film.
Nobody sees anything.Then it all comes back at once.
That is the reason. The mechanics — sealing, shot counts, the hour it develops — are on how a film works.