Sierra1

Question: How did getting shot knock Jason unconscious? Second, how did getting shot cause him to lose his memory?

Answer: Any significant shock could cause a person to lose consciousness. The amnesia was probably a combination of the shock of being shot, half-drowning, and the fact that Conklin had the Treadstone agents "wound so tight, one of them was bound to snap."

Sierra1

Seeing Wombosi with his kids made Bourne realise the pain his job causes innocent people, and he couldn't bear it. Combined with the rest, the result was amnesia.

Question: How did the Paris police find the hotel Jason and Marie stayed in while in Paris?

Answer: A earlier scene shows the police found Marie's car, presumably they then checked all the hotels in the nearby area and the hotelier recognised Jason and Marie.

Sierra1

Question: When Bourne and Marie arrive at his Paris apartment, Bourne phones a hotel to inquire if a 'Jason Bourne' was a guest there. When told no, he then asks if his other alias - John Michael Kane - was registered. He is told by hotel staff that Mr. Kane has been killed in an accident. (This is before Treadstone's Rome operative tries to eliminate Bourne in the apartment.) So I'm guessing this first report of Kane's accidental death had been arranged by Treadstone? To cover Bourne's trail to Wombosi's yacht?

Dusibello

Chosen answer: That's correct. Nicky arranged for a substitute corpse to appear as if "John Michael Kane" had died in a motorcycle accident, to cover up the connection to Bourne's mission once Treadstone realised Bourne had failed and disappeared. However, Wombosi saw the body at the morgue and deduced the deception, and Bourne later discovered that body is "taken" by the brother so deduced that it's a setup all together.

Sierra1

Chosen answer: Bourne arranged to meet Conklin at Pont Neuf, then planted a tracking device on the surveillance van, which he followed back to the Treadstone safehouse.

Sierra1