^"Structural Engineering is the art of assembling materials whose properties we do not fully understand into arrangements we cannot fully analyze to support loads we cannot fully predict – and to do so in a convincing enough fashion so that the public has complete confidence in the resultant structures."
Sounds like a tough job. (can you tell I'm reading a book by an Engineer philosophizing about Engineering? It was an unexpected find in the library; amazing how many books there are about science but so few about those who make the stuff we actually use every day)
A cheer for the uncredited engineer, who gets all of the blame when things go wrong but none of the credit when it goes right. We just assume what they do will work.^