b) Google Maps could advice direction to some smaller not so well maintained roads, that could increase travel time a lot, or lead to some road where it's hard to turn back. So maybe planning ahead and writing driving instructions at home before driving would be better. Or just trying to follow main street signs for major roads.
c) There are some DIY projects like Raspberry Pi navigator: https://www.raspberrypi.org/forums/viewtopic.php?t=70517
The raspberry pi project looks interesting, though.
Here's some possible scenarios though:
* If I need to remember when something is going to happen, such as "I'm leaving my house to meet a friend at 4 PM", I can just commit to memory what time it was suppose to be.
* If there's a lot of stuff happening, then I'd make a note on my phone. If the times of events change while I'm out, it doesn't really matter if my calendar at home is out of sync. I'm just going to cross the day off when I get back.
* If I find out a later date will change ("the user group has been moved to Thursdays"), then I'll leave myself a reminder on my phone. Most of the things on my calendar are actually little post-it notes, so I can move things around. I only write things in ink when they will never change, like national holidays that are already scheduled/set in stone.
So far, I haven't really run into any pain points. The drawbacks of paper calendars just aren't enough to overcome the drawbacks of electronic calendars.
Maybe you kid, but... I've been using a physical calendar on the wall this year. I also replaced my Apple Watch with a Casio F-91W some time ago.
You know what's really great? My calendar or watch never gets hacked and it's never unavailable because some overnight software update broke it! Sure, the F-91W technically runs software, but it has no connectivity. That's the important part.
Now if I could just figure out what to do with my phone... I don't think dumb phones are particularly secure, so maybe it makes sense to keep using Android? Or eventually switch to Linux on my phone?