Yeah, fair enough, makes sense. But to determine all of those parameters there'd have to be an investigation right?
The police will do the investigation as two died, so there will be a report of sorts. All I meant is there will not be a comprehensive investigation that is released to the public for each event detailing the causes and remedial actions. The police report will just gather facts and document the event in case of litigation, which is what is done in car accidents, if something is amiss or the coroner gets wind of something unusual then it may be elevated to a more substantial report, news involved etc... It's not whether an investigation is conducted, I was more referring to an ATSB style comprehensive investigation with public report highlighting what we can learn or improve.
Why I said earlier these events will continue to happen even with ACAS systems, ATC and whatever else. But the hope is it's at a lower rate.
Whenever you have multiple aircraft operating in close proximity you have a chance of collision. It's a small chance but always there, no different to driving a car. What can happen with ATC and FLARM, ACAS is the pilots can get lazy and rely on said functions to save them, when eyes open and good radio procedure are the best defense to start with. Look what happens when cars are given prototype autopilots, youtube filled with idiots in the passenger seat filming the car drive itself. A system designed for open highways but people using it in cluttered city streets and wonder why it sometimes hits a pedestrian...
Near airports you have a much higher risk as pilots are focusing on the approach and landing with most attention on the runway. This is why lookout and traffic awareness should be stressed in training and also an orderly predictable traffic pattern established for any airport. Gliders also have unique problems in that they circle around looking for thermals so not as much straight line and predictable, they also congregate around launch sites. A savvy powered flight pilot should avoid these areas if they have no business there to reduce the chance of collision, after all they are marked on the maps for a reason. If you are to transit the area be on your toes and keep a very good lookout.