What does it mean that bidirectional awareness?

When A links to B, B should know that A links to it — bidirectional linking reveals hidden patterns.

Example: You write a note about 'sunk cost fallacy' and link it to your note on 'decision-making under uncertainty.' In a one-way system, you'd have to remember that connection existed when you later open the decision-making note. In a bidirectional system, opening 'decision-making under uncertainty' automatically shows you that 'sunk cost fallacy' references it — along with every other note that does. You didn't plan these connections. The system surfaced them because every link knows about both ends.

Try this: Open a note in your knowledge system that you consider a 'hub' — a concept you reference often. Check its backlinks or incoming references. Count how many notes link to it that you had forgotten about. Pick three of those incoming links and read them. Notice what patterns or clusters emerge from seeing who references this concept. If your tool doesn't show backlinks, that's the lesson: you've been building a graph where half the edges are invisible.