Come up with an example of a purchase decision referred to affect.

Come up with an example of a purchase decision referred to affect. In retrospect, whether or not the purchase decision was wise, how appropriate was this process?
Come up with an example of a purchase decision referred to an external authority. In retrospect, whether or not the purchase decision was wise, how appropriate was this process?
Come up with an example of a purchase decision referred to an intentional randomization. In retrospect, whether or not the purchase decision was wise, how appropriate was this process?