When we apply this concept to human relationships, matters become significantly more intricate. The "cost" of maintaining a relationship is not always monetary; it often involves "investing" time, emotional energy, and sometimes even physical resources.

With a recent friend, the inbound capacity may be relatively low. They are still getting to know you and their attention is likely divided among other new connections. Building trust and demonstrating your value as a friend are crucial steps in increasing your inbound capacity with them.

In contrast, a long-standing friendship generally possesses a higher inbound capacity. You have "invested" years cultivating the relationship, and the trust and understanding you share allow for deeper and more meaningful interactions. However, even the strongest friendships have their limits. Life events, career changes, and new relationships can impact the available inbound capacity.