Attaché Case Hypothesis (2.1)

X had just come from the airport where he’d picked up the attaché case from the left hand luggage.

The taxi drove X into town; there was a traffic jam coming up over the fly-over. - X did not have much time to waste, so he asked the driver to drop him off.

X was just stepping out of the taxi when someone bumped into him. The lock on his attaché case flicked up.

For a second X saw the attaché case opening up, and everything falling out for everyone in the street to see.

X wanted to remonstrate with the offending person, but caught himself just in time.