There is a ton of evidence that suggests that people who volunteer or are recruited to focus groups walk into the group compelled to provide criticism for any design.
Kunobufakazi obuningi obuphakamisa ukuthi abantu abavolontiya noma abaqashelwa ukugxila emaqenjini bangena eqenjini eliphoqelelwe ukuthi ligxeke iyiphi ukwakheka.