The constraint A roll gives you thirty-six frames and no feedback. You will not see the picture for a week. You cannot check, delete, or try again from a slightly different angle.
So you look longer before you press anything. That is the entire lesson, and it did not stay in photography.
What the delay does By the time the scans come back, you have forgotten what you intended. You see what you actually captured, without the memory of the effort defending it.
Roughly four frames a roll are worth keeping. That ratio has not improved, and I have stopped wanting it to.
Bringing it back to digital Set the camera down between shots. Decide before you raise it. Give yourself thirty-six for the day and mean it.
The camera was never the constraint. Attention was.



