What was interesting is to see them piece the theory together from the very fragmentary and little evidence (what is even more mind-blowing to know how little evidence there was to play with given we are talking about a 747).

The true mystery left is how did he execute the suicide and why. How did he dispatch the co-pilot? (There was a very small window to do so). What did he do in the final hours (was he alive for the entire duration)?