One of the consequences of this is when something goes very wrong, and the people involved say it really shouldn't have because something like 4 separate things

One of the consequences of this is when something goes very wrong, and the people involved say it really shouldn't have because something like 4 separate things have to fail at the same time for that to have happened. What they don't realise is that, thanks to the FFT, 2 of those 4 things actually failed over a year ago and the system has been continuing to work ever since without anyone ever noticing. One of the other things actually fails intermittently a couple of times per month, and while a couple of people have noticed that and reported it, either it's not been investigated at all, or when it was investigated everything looked fine and the report was put down as an unexplained glitch. All that was actually needed was for the 4th thing to fail, to cause this "can't happen" failure mode to suddenly ruin everyone's day.