I don’t have a problem with PKM as a referencing tool.
But step 2 “Organize → Place in buckets or categories” creates all sorts of problem:
When you delegate your info into existing categories, at least 2 problems arise:
1. Framing bias: the way presented → way you think → limits the possibilities.
2. Low cognitive load: the struggle is essential for encoding → more forgetting.
I don’t have a problem with PKM as a referencing tool. But step 2 “Organize → Place in buckets or categories” creates all sorts of problem: When you delegate your info into existing categories, at least 2 problems arise: 1. Framing bias: the way presented → way you think → limits the possibilities. 2. Low cognitive load: the struggle is essential for encoding → more forgetting. 
organizing methods that are overly rigid and prescriptive. The best way to organize your notes is to organize for action, according to the active projects you are working on right now. Consider new information in terms of its utility, asking, “How is this going to help me move forward one of my current projects?”
Tiago Forte • Building a Second Brain: A Proven Method to Organize Your Digital Life and Unlock Your Creative Potential
In the old system, the question is: Under which topic do I store this note? In the new system, the question is: In which context will I want to stumble upon it again?
Sönke Ahrens • How to Take Smart Notes: One Simple Technique to Boost Writing, Learning and Thinking – for Students, Academics and Nonfiction Book Writers
the old system, the question is: Under which topic do I store this note? In the new system, the question is: In which context will I want to stumble upon it again?
Sönke Ahrens • How to Take Smart Notes: One Simple Technique to Boost Writing, Learning and Thinking – for Students, Academics and Nonfiction Book Writers
Choose Meaningful Categories for Your Items