My personal favorite is organizations' vast overestimations of the size/complexity and performance needs for their software projects, probably related to delusi

My personal favorite is organizations' vast overestimations of the size/complexity and performance needs for their software projects, probably related to delusions of their own grandeur. Rails is more than capable of serving an intranet application for your 150 employees. But nooope, we're an enterprise, so we need J2EE/Oracle.