Manager: The only employees who should receive bonuses this year are those who were exceptionally productive over the past year. Liang is an excellent account executive, but she works in a corporate division that has failed to meet its productivity goals for the year. Thus Liang should not receive a bonus this year.
The reasoning in the manager's argument is flawed in that it fails to justify its use of one group's performance as the basis for a conclusion about a wholly different group.