Question: I don't remember a hint on the movie how Jason Bourne found the home of [Jarda](http://bourne.wikia.com/wiki/Jarda), the only other living Treadstone assassin. Is it mentioned somewhere or are we just supposed to assume that Bourne simply used his amazing resourcefulness to find him?

Answer: 
It took some digging. When they meet each other at the house in Munich Jarda says "word in the ether was that you lost your memory." And Bourne replies "you still should have moved." This implies Bourne has at least some fragmented memories of prior knowledge of Jarda, or maybe that the house is covertly owned by the CIA. We know they've interacted before -- it's hard to tell, but in the flashbacks outside the hotel right before Neski's murder, **it is Jarda who is the driver of the car that Conklin and Bourne are in**. This is further confirmed in the screenplay.

Furthermore, there is some really interesting unused dialogue in the screenplay where Jarda says that he had eventually tracked Bourne to the motorcycle shop that Marie owns at the end of *Identity* to kill Bourne and Marie. Bourne reveals to Jarda that he knew Jarda had found him and so then had evaded Jarda to Goa, only even sparing Jarda's life at Marie's behest. And so it is then implied that unbeknownst to Jarda, Bourne at some point then tracked Jarda back to Jarda's Munich base, which Jarda hadn't moved from by the events in *Supremacy* - hence the "you still should have moved" line. "You still should have moved" and Jarda being the driver on Bourne's first mission are the only bits of all that that are actually included in the film but I think it's enough to make inferences that make sense of this little plot question.
I'm starting to think he didn't lose his memory and it was a plot by Treadstone to set him on a path he never lived. Such as his apartment in Paris. He doesn't remember it because he was never there before. It was all a plot to set him up.