Every time you see someone announcing a CRUD app written over the weekend you pretty much know that there is hardly any business logic involved. The example yo

Every time you see someone announcing a CRUD app written over the weekend you pretty much know that there is hardly any business logic involved. The example you give is a great one, it only gets more interesting when it is not just money on the line but lives. Think avionics software and the like. That stuff ranks amongst the most expensive software produced per line of code because of all the audits and certifications that try to ensure that there won't be hidden bugs that somehow make it into production.