Made as simple as possible, but not simpler.
A “knowledge line”, aka “K-line”, is a representation of knowledge that connects what we know with how it’s used – we keep each thing we learn close to the agents that learn it in the first place.
Imagine buying something in a store and having to remain there to use the thing.
Sharing is a way to facilitate concurrency. Collaboration is a way to orchestrate concurrent operations on what is shared.
There are a number of reasons to punt on power in a design, to go with a worse-is-better style such that you express the design in the least powerful way.