My understanding of the phenomenon is the following: 1. The gap between how many things human brain can reliably and easily keep in mind (bringing up every tim

My understanding of the phenomenon is the following: 1. The gap between how many things human brain can reliably and easily keep in mind (bringing up every time it is importantly relevant) and how many things do we have (for optimal performance, suboptimal performance means failures and stress) to keep in mind today is mindboggingly huge. I even believe an average person would be orders of magnitude the Einstein (or whoever you like better) genius if they could simultaneously recall and relate everything they ever learnt (let alone read/heard/seen). 2. Note-taking software can potentially help a lot. Some note-taking apps and some methodologies help some people in some extent. 3. The actual current capability and UX of existing note-taking apps is miles away from perfect (let alone fitting everyone). This means there is a lot of potential to explore. 4. Substantial activity in 3. has been taking place during the pandemic. 5. All the above ideas have became more visible. 6. People get more interested. Bonus: the very act of writing a fact down (let alone structuring them) itself contributes to learning it.