No such thing as superior knowledge, just shared. Like u been in the game a long time both military n civil. You can never stop learning rgdg safety. Seen the fun stuff n the disastrous. The name of the game is to keep people and aircraft safe. If it makes people feel happier and safer by taking wacky, but legal, trinkets and gizmos onboard then fine. At the end of the day they won't work if there is a massive loss of control of the hull. On a train travelling at 60mph over bumpy lines it's hard enough to stand let alone do other tasks. On an aircraft travelling at 500mph with minimal control other than down then it's all but impossible bar banging out with an ejector seat. My job, possibly like yours is tom understand safety issues and fix them before the worst case scenario. The times that does happen to tomsort throughout the pieces, facts and data to understand the root cause of why it happened and to stop it ever happening again to the best of our ability.