The optimal mindset of an investigator is one that is able to look for the motive of the crime that is at hand and able to investigate all the possibilities of even the most obvious evidence that has been gathered. In my own opinion, I think that an optimal mindset is where the investigator can process all the evidence at hand, in their mind and come up with a conclusion of what occurred. Also I believe that the mindset is one that can be taught through training and experience.
The scientific method is a systematic approach of observation, hypothesis formation, hypothesis testing and hypothesis evaluation that forms the basis for modern science. There are anywhere from five to eight steps in the scientific method. However, all versions of the scientific method involve the person trying to solve the problem experimenting to find an answer. A prudent criminal investigator will apply the scientific method within the course of his or her investigation to ensure that an investigation is done