A tehsil office proposes to hold a 'meet the officer' hour on Saturday evenings, pointing out that when the neighbouring tehsil began doing so the number of grievances settled within a month rose by half. Which of the following, if true, gives the strongest reason to doubt that the same result will follow here?

An evening hour works only if the people it is meant for can still be there in the evening, and that is exactly what held in the neighbouring tehsil and fails here. Most of this tehsil's complainants must be on the last bus before the hour begins, so the room would stand empty. The age of a building, a small difference in the number of villages and the transfer of one officer leave the borrowed result untouched.