A group of dedicated teachers at a meeting decided to host a "remember the 80s" themed dance for the students to raise funds for new security cameras at their high school. At a previous meeting, a member of the group told the others that a number of students in the chess club stated that they were really "into the 80s." The group now decides to reserve the gymnasium, book an 80s cover band, and order 100 pizzas, without checking the accuracy of the group member’s information or surveying the student body about their interest in an 80s themed dance. This is an example of:__________________.