Used to work in plumbing. One morning coming to work and see a waterfall coming from the 3rd floor..The apartments were complete with kitchen furniture installe

Used to work in plumbing. One morning coming to work and see a waterfall coming from the 3rd floor..The apartments were complete with kitchen furniture installed. Turns out one idiot didn't solder an elbow,while other didn't test it properly and the third signed it off and gave green light to turn the water for the entire block.. It took many people and a lot of time to undo this. Not much of a difference when things go wrong in code.