A knowledgebase is very different from a GTD/to-do list. My personal encyclopaedia is full of so many citations and interlinked factoids that I can honestly say

A knowledgebase is very different from a GTD/to-do list. My personal encyclopaedia is full of so many citations and interlinked factoids that I can honestly say I wouldn't be half as learned as I am without it. Almost everything I write down no longer gives me a mental burden once I offload it from my memory. It's something that builds on itself over time as you gradually learn more and more about various topics.