I read somewhere a person has about 20 people and about 10-20 places in its immediate memory/enviroment, and most acquaintances known for over 8 years are usually acquaintances for life.Full asshole.
I just don't get it. I am in close contact with the folks I am always in touch with. Those that were too busy to even keep a basic level of contact the whole time, well, you made that decision a while ago, so please stick with it.
Even if you wanted to, your memory/time just cant handle more than that. Your mind will "delete" contacts to make room for new ones if necessary. I remember this, because Im mostly in agreement.
But you need at least 100 people to get things done. The higher in food chain, the more you actually need.
Bullshit small talk and occasional gifts/calls/greetings keep the line open.