Speaking of engineers, I just helped my son change out the thermostat in his car.  On most cars it's a very simple task.  Maybe a hose clamp and two bolts.  His car?  Noooooo.  It only reinforced my long-held belief that once a year an engineer should be marched out in front of an assemblage of his colleagues...and SHOT.  Maintainers everywhere would then marvel at the ease with which machines could be repaired.  

---