The Electrical Rule Checks (ERC) in a CAD design software are a set of heuristic checks to help spotting potential mistakes in schematics. However, they have subtleties and quirks, which can lead people to fight against them instead of using them to their full potential. In this talk, I will discuss some of the pain points I have experienced or have whitnessed people experience while using ERC, give some tips, and encourage people to use them and even try and improve them even more. It will be illustrated by a few real-life blunders that a good use of ERC could have prevented. TL;DR: I love ERC.