Well, almost kill you. Or send you to sick bay for nearly 5 looong segments.
At least too much ambitious work is dangerous. Just now I got seriously hurt attempting a supervision of a hull replacement. Since by now I really know my way around a ship's navigation system I wanted to try something to further my career. Looks like that's still too much for me, since I've either failed or gone straight to sick bay so far.
Best be patient! (You see what I did there?)