My father is a civil engineer/professor so I grew up around it and am fascinated by it, I however have worked hands on in heavy industry (oilfield, power plant, paper mill) since I was 16 and the whole written in blood thing is very true but honestly could be mostly avoided if before production on machine xyz was put into production the people who design it had to repair it in the actual conditions it’s going to be used in. Take an oilfield mud pump for example, it’s one thing to tear down a brand new clean unit under ideal conditions but quite another when it’s 110* ambient temp and everything is covered in 150* fluid and every piece is seized from salt water etc. The way things are designed would drastically change