I don't know how accurate of a comparison that is. When you build a bridge you will likely have the time to double-check your work. And there may be others that do so too. Not that it is unimportant, but maybe not necessarily a deal-breaker.There was a professor where I was an undergraduate who would answer complaints about "it was just a sign error" with "make sign error, build bridge upside down. People and cars fall off. No credit."