Back when I routinely dialed phone numbers by hand (either on a keypad or on a literal dial), I memorized the numbers I called most frequently. Many of those numbers I still have memorized today, years after some of those phone lines have been disconnected.

But now? I almost never enter a new phone number anywhere. Maybe someone shares a contact with me, and I tap to add it to my contact list. Or I copy-paste a phone number. Even some people that I contact frequently, I have no idea what their phone number is, because I've never needed to "know" it, I just needed to have it in my contact list.

I'm not sure that this is a bad thing, but definitely is a thing.

Ah, well, more memory space for other stuff, eh? I suppose. But like what? I could describe other scenarios, in which I used to have more facts and figures memorized, but simply don't any more, because I don't need to. While perhaps my memory is freed up to theoretically store more other things, in practice, there's not much I really "need" to store.

Even if no longer memorizing phone numbers isn't especially bad, I'm starting to think that no longer memorizing anything might not be a great idea.