How does Kumashiro define 'commonsense?
Commonsense is the knowledge acquired about certain things that can vary based on the population of people. This knowledge is seen as second nature to the population being studied because of the frequency it is used and thus is not questioned.
Why is it so important to pay attention to the 'common sense'?
It is important to pay attention to common sense because of the huge role it plays in society. Learning about commonsense and the otherwise unquestioned oppressive nature of it in schooling is the first step to change. By trying to acknowledge that commonsense is biased and oppressive would make people less oblivious to the particular issue, which could eventually lead to change!