ABSTRACT
Since ‘exactness’, or accuracy of work, is of so much importance in all branches of research, this accuracy must also be applied to the work of the Investigating Officer. But what is to be understood by accurate work? It consists in not trusting to others but attending to the business oneself, and even in mistrusting oneself and going through the case again and again. By so proceeding, one will certainly bring about an accurate piece of work.
