Good one Mike Smith, John Anderson et al. Your airspace system works really well. Can someone please turn their lights on as they are wandering around without their transponder turned on. Also they are not looking out their windscreens as their heads are between their ... (well they would say they dropped a pen between the rudder pedals). Here's a start:
TCAS RA doesnt mean "NAS system worked as planned" it means the last link in the chain didnt break
If a collision occurs you cant say "The pilots failed to see and avoid" because you have been told (by scientific research-see ATSB report) that see and avoid has its limitations ie you probably wont see a lightie when you are approaching head on at 250kt and the other is say 110kt. ie 360kt closing speed 6nm/min or 1nm/10sec.
If Mr Anderson mentions another semi trailer again it means he still has no idea and is intent on proving this to everyone.