In a Forum on Mac Resource, “Kap” asked:

“Do you still use a Daily Planner to keep track…of your appointments, reminders, contact info, etc.? I know thre are electronic devices made for such tasks but what if the battery runs out, the system crashes, the power is out, the device croaks, etc.?”

“Mr Downtown” responded:

“Quo Vadis Miniweek. 3 x 4 inches means never having to say ‘my calendar is in my bag/car/office.’ And it’s cool to occasionally look back at what was important enough to write in my 1979 appointment book.”