The code comment redundancy epidemic has reached street signs! Just like that sign helpfully pointing out "THIS IS A STOP SIGN" under an actual stop sign, junior devs have a special talent for writing comments that state the painfully obvious: // This function adds two numbers function add(a, b) { return a + b; // Returns the sum } Senior devs scrolling through that code base are experiencing physical pain right now. Remember folks: good comments explain why , not what . Unless you're documenting an API, in which case... carry on with your obvious statements!