101 ways to make a circuit fail

A circuit design, whether on first silicon, breadboarded or PCB´s will quite often fail to work first time and getting it to work is costly time-consuming, irritating and sometimes very frustrating. If the failure is inevitable, then why are more precautions not taken at the earlier stages of design? What are these mystical failure mechanisms? Human errors, simulation errors, testing errors? etc. The authors attempt to answer some of these questions