Risk management is a very interesting topic. Practised by every one in one form or another. It was noted that Airservices didn't like the previous risk management of the introduction of E airspace outside of radar. When the DJ 737 got a bit close to the unknown VFR aircraft at Launceston, it was noted the haste at which a radar repeater was installed to prevent a re-occurrence. Risk management can be a useful tool or a dangerous tool, depending on the data used to reach conclusions.