Why does directed relationships fail?

The most common reason directed relationships fails: Treating all relationships as undirected by default. This is the symmetry assumption — the implicit belief that if A relates to B, then B relates to A in the same way. You'll recognize this pattern when you assume that because you trust someone, they trust you; that because you depend on a tool, the tool depends on you; that because A causes B, B must cause A. The symmetry assumption is comfortable because it simplifies your model. But it simplifies by discarding exactly the information that matters most: who influences whom, what causes what, and where power actually flows.

The fix: Choose a system you participate in — your team, your family, your professional network, a project you manage. List ten relationships within that system. For each one, ask: does this relationship have a direction? Write an arrow (A -> B) for directed relationships and a line (A -- B) for undirected ones. Then look for asymmetries you hadn't noticed. Where did you assume mutual relationships that are actually one-directional? Where does information, authority, or influence flow in one direction but not the other? Identify at least two relationships you had been treating as undirected that are, on closer inspection, directed — and write down what changes when you acknowledge the arrow.

The underlying principle is straightforward: Some relationships have direction — A causes B is different from B causes A.