> If we look at it rationally, the phone numbers were an extra complexity layer introduced by technology I don't think that's any more rational than suggesting

> If we look at it rationally, the phone numbers were an extra complexity layer introduced by technology I don't think that's any more rational than suggesting smartphones supplanted memory training; the phone number is an implementation detail, the lack of practicing memorization of important information is a general case. Smartphones created a dependency on themselves and solved problems that mostly weren't problems, or were often tertiary optimization problems before they came along, while phone technology actually solved a fundamental problem with high-latency communication via mail. If I ask myself whether I'm generally better off having my contact numbers in my smartphone vs before—which itself is a fictitious premise, since mobile phones had them before they got smart—the answer is definitely "no", because the distribution of people I call isn't so varied as to make memorizing them difficult, but my lack of inclination to do even that means I don't remember the most common case and always need to have the phone or I'm screwed. It's hilarious to watch this play out with drivers who are entirely dependent on a Maps app for directions in their own city. They don't remember basic routes, address blocks, can't even do it sometimes without the phone speaking it to them. It wasn't really a problem before, you'd just figure it out most of the time, or ask someone for an approximation.