My father is a mechanical engineer and he says the amount of problems in the designs he reviews is very high, contrary to popular beliefs. There are often multi

My father is a mechanical engineer and he says the amount of problems in the designs he reviews is very high, contrary to popular beliefs. There are often multiple rounds required to clean things up and some problems are discovered at build time. Buildings and bridges are not falling down because they are much less complex and more similar to each other than software projects.