Apple perfected optimizing for the 80/20 split, where 80% of users will experience very little friction, and the other 20% can go pound sand. And that was obviously a clever marketing decision up to a point.
Some things don't get stuck in my memory, like the current year or my own age. My own age is easy to calculate as long as I know the current year, but the current year isn't always easy to remember for some reason, especially the first 6 months of each year. Most of the time I just have to think for 10-15 seconds to remember it though, so isn't the end of the world exactly.
And no, my memory is generally fine, it's just some "sometimes changing" numbers that just don't get persisted correctly, or they're stored correctly but my retrieval microservice is too janky to retrieve stuff fast enough.
What do you want/need this for? Not something I've heard before