Most people in most areas don't know the law, so you can't point it out, you can only speculate.

Assuming you know the law when you never studied it is the problem. The idea is that you should be asking if something you think is questionable is legal or not. That's why companies have lawyers. It's about bringing it to the attention of the right people who can make the call and keep the company out of trouble, without saying something incorrect that you might have to testify about later.