Al-Hisawi, the intelligence data set on Mustafa A. Al-Hisawi should be collected and added to the diagnosis. Similarly, the investigator can predict the position of the 21st person again from the intelligence data set on the 19 perpetrators and Mustafa A. Al-Hisawi.

The method provides the investigator with the intuitively comprehensible direction of potentially fruitful investigation from what is already known toward what is not, but can be known.

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