1) The document discusses measuring the return on investment (ROI) of relationships, using examples like marrying for money, owning a dog, the value of Facebook fans, and lifetime customer value.
2) It argues that while ROI can be measured through financial transactions, the most valuable relationships are not fully captured that way since human connections are about more than transactions.
3) To better measure relationship health, the document suggests focusing on non-financial metrics like acts of reciprocity, advocacy, and shared experiences between people.