"Fool me once, shame on you. Fool me twice, shame on me." I can learn from my mistakes and improve progressively. If I rely on another instead, I cannot, and

"Fool me once, shame on you. Fool me twice, shame on me." I can learn from my mistakes and improve progressively. If I rely on another instead, I cannot, and I cannot (necessarily and confidently) see to it that they learn from their mistakes and improve. By relying on another (at least an unreliable \ uncommunicative \ uncooperative one), I cannot improve my chances of them not making those same mistakes again, taking me down with them.