That makes sense. I remember people carrying planners years ago. I suppose some still do. It's just that the digital one makes it easier.

Bit of a confession: even with tech, and me being technical, digital calendars didn't do it for me. Until I got into anime and every anime character has a birthday, a blood type, all these details. I don't even know Captain Picard's birthday and I'm a lifelong Trekker who started with Next Generation. Maybe he has one, but I never knew it. Anime fans tend to know their characters' birthdays. So it happened that I started putting the birthdays of characters I like into the calendar. It's nice to see it's someone's birthday, even if they're a fictional character who doesn't even age. Like the Simpsons is like 30+ years old and Bart is still in fourth grade? (I don't know his birthday, either.)

So, that got me into it. Working a weird schedule helped, I'd get my schedule and I'd put it in the calendar, I had a calendar just for shifts and I share it with my wife.