I may be alone on this one, but I'm enchanted by David Rockefeller's long-ago crusade to create an "electronic Rolodex" of the 150,000 people he met in the course of his business career.
The dude nearly invented LinkedIn! Of course, he forgot to allow access to anyone else, which limited the value of his efforts. And boasting about 150,000 isn't quite what it used to be. (More like an Ozymandias claim, in fact.) Anyway, some more thoughts about it are here: https://www.forbes.com/sites/georgeanders/2017/03/20/he-knew...
My father met a top exec (later president) of Toyota in the 80s, he came to my house and met our dog. Some time later we saw him writing on a little black notebook.
A decade later, the exec invited my father, and during the dinner conversation he asked about his children and dog by name... that was pretty impressive, and an example of how to manage relationships.
LinkedIn doesn't (yet) give you that kind of information (I guess some good CRMs do?)
The dude nearly invented LinkedIn! Of course, he forgot to allow access to anyone else, which limited the value of his efforts. And boasting about 150,000 isn't quite what it used to be. (More like an Ozymandias claim, in fact.) Anyway, some more thoughts about it are here: https://www.forbes.com/sites/georgeanders/2017/03/20/he-knew...