Superficial and shallow knowledge always leads to dangerous consequences. an incompetent doctor or surgeon may play with the lives of his patient, a teacher with shallow knowledge of his subjects will misguide his students; a lawyer without a thorough knowledge of law will ruin his clients; similarly an inefficient engineer will build bridges and building that could cause major accidents. these people expose the lives of others to serious risks. they are so conceited that they never realise their shortcoming and hence make no progress. we can find such people in every walk of life whether art, science or literature or economics or medicines and these are hazards for the common people.
one must, therefore, never rely on person who are not thorough in their profession or vocation and be cautious to deal with such fellows.
