We have a lot of powerful software for building design these days, Autodesk's Revit suite being the big one. But as in software development, better tools just ends up meaning that clients demand things faster and cheaper, rather than better.
There are some classes of problems that it definitely helps solve, like keeping the structural engineer and HVAC engineer from design conflicts where a beam and a duct go through each other. But everything needs to be done yesterday, so I'm not surprised that problems that can't be automatically identified are able to slip through.
> “The people responsible for technical oversight were saying, ‘We cannot do this within this amount of time,’ and Schwarz would answer, ‘I don’t care,’ ” he says.
Pretty much sums it up.
EDIT: There's no excuse for the exposed high voltage wiring alongside the low voltage alarm systems though, that sounds like a contractor screwed up. I don't know the German electrical code, but generally in the US anything over 60V is classified as "class 1" wiring and it goes in a conduit. Typically this is a grounded metal tube so that you can't accidentally pound a nail through it, and if anything shorts to the conduit there's a safe path to ground until overcurrent protection trips.
And if for some reason you have lower voltage "class 2" wiring running in the same conduit, those wires (and whatever else they split off to) are now considered class 1, even if they're only low current 24V signal wires or similar. They can no longer leave conduit and go anywhere else, on the off chance that it shorts to the line voltage wires it's sharing conduit with.