It’s Phil’s 50th birthday and Jay decides to try and sneak a gift to Phill that Cam had given him before. What Jay doesn’t realize is that Cam had inscribed the front cover and as Phil begins to red the inscription, Cam recognizes it is the same book that he gave Jay before. Giving gifts can be seen as wasteful if the giver doesn’t fully know the recipients preferences and willingness to pay. The entire family tends to give each other gifts that the others don’t always want, but this time Jay didn’t even take the time to open the book in the first place.

See more: deadweight loss, exchange, gift giving, inefficiency, irrationality, self interest, subjective value