Elderly people have never been my primary source for facts or technical instructions. I went to the library or asked experts any age before the Internet came around. It's the experience and the subsequent insight which is extremely hard to replace by technology.
Real life example: I'm always in search of good recipes. For sure, there are tons of good recipes out there. But there are even more bad ones out there. In my experience, user rating systems only help to a limited degree. Even then, I'm facing a long web search and I typically have to try many of them out before I arrive at a good one. On the other hand, I collect recipes from grandmothers and grandfathers. They have never failed me. Why? Because they've been practicing them for 50 years.
Real life example: I'm always in search of good recipes. For sure, there are tons of good recipes out there. But there are even more bad ones out there. In my experience, user rating systems only help to a limited degree. Even then, I'm facing a long web search and I typically have to try many of them out before I arrive at a good one. On the other hand, I collect recipes from grandmothers and grandfathers. They have never failed me. Why? Because they've been practicing them for 50 years.