Reader question: Please explain “bad apple” in this sentence: “We’ve heard enough ‘It’s just a bad apple’ argument.” My comments: I’ve heard enough of the bad apple argument, too but first we have to ...

Reader question: Please explain “bad apple” in this sentence: “We’ve heard enough ‘It’s just a bad apple’ argument.” My comments: I’ve heard enough of the bad apple argument, too but first we have to ...