Real danger is not possible to assess by using one cue. It is a complex perception constructed by the perceiver. It can be objectively assessed through crime statistics. Some cues are very useful for the prediction of danger, while others are less useful or entirely useless. Different people utilize cues differently.
Achievement is high when cue utilization matches ecological validity.
When achievement is high, cues are being used accurately. Obviously it is good to attain high achievement. Behavior can then be adaptive.