If one were able to record all brain activity in a life time and the sensory/environment/external events were recorded as well then perhaps one could recreate fallen humans and ask them questions. Perhaps to be certain of answers as being authentic there could be a mode where only previously asked questions are answered. However I belive with the large amount of data collected over a lifetime it would be possible to generate possible answers that that individual would have given. I want to build this one day and have myself seperate from my copy and see if I answer questions the same. However I believe people are always learning from new experiences even repeating experiences, and perhaps one becomes wiser while the copy is only wise to the point at which it was copied.