Anastaska Кузнецова's Key Ideas from Criminal Psychology
by Hans Gross

The problem is not teaching the inferrer to think: the problem is the examination of how inferences have been made by another and what value his inferences may have for our own conclusions

So long as one only looks on the scene, it is impossible, whatever the care, time, and attention bestowed, to detect all the details, and especially note the incongruities: but these strike us at once when we set ourselves to describe the picture on paper as exactly and clearly as possible. …

The “defects of the situation” are just those contradictions, those improbabilities, which occur when one desires to represent the situation as something quite different from what it really is, and this with the very best intentions and the purest belief that one has worked with all of the forethought, craft, and consideration imaginable.

Not only must the self-made victim be exposed, but innocent people who may be suspected must be protected.