At breakfast, I was chatting with "Lenny" about meetings. In particular, we discussed meetings that leave you feeling drained vs. ones that don't take up energy.
Lenny: "It's different when you're meeting with someone new. That's more draining."
Me: "That's true. Because you are creating a new entry in your memory, rather than appending to an existing entry."
Lenny: "Yes, it's expensive to make a new entry."
Me: "Deletion is also time-consuming."
Lenny: "Human memory must be a sorted linked list."