We already have a pretty good idea of what happened to the Germanwings flight even with 1 damaged black box.
Indeed. Every day the poor guy has a new condition: he was depressed, had vision problems, was a narcissist, ... So he was also probably deaf, and didn't hear the captain knocking at the door - which he locked by moving the button to the opposite direction, being also dyslexic. This in addition to some orientation problems, making him think he was already at Dusseldorf airport (his internal clock being also broke).