To truly include all adverse factors be sure to include the Law of Unintended Consequences.
It states: There will always be unintended consequences.
At worst, in helicopters, this means the next poor sod and all his pax die a horrible death on what should have been a gentile and lovely pleasure trip because you failed to log that last over temp start or all those over-torque T/O's, et....etc... etc...
Now! Who among us can stare the keyboard in the face and say: "Never I, Dan" ???
Metal does indeed have a memory. Never forget, fellow pilots, every bearing, tail rotor blade and pitch link knows what you have previously asked of it. That component cannot speak to the investigator, but that is exactly why we have Tech Logs.
If you can't understand the above you have no business in a cockpit.
Dan
PS:
You know what really pisses engineers off? It's those idiots in the pub who tell you it is legal to drive 15% over the speed limit because there is a tolerance on car speedometer accuracy that permits that much error? They can't quite grasp that instrumental error is granted to the instrument maker...not the driver.
Dan
(and for those wondering, no, car instrumental error is not a permitted 15%)