No, you are either lying or wildly confused. You explicitly just stated that what you were responding to was the "binary search is useless" part. If you were responding to the "leaves no visual cues" part, you would have bolded it. You just said that what you responded to was the "binary search is useless" part. That means that logically, your argument IS that even in situations where there are no visual cues, binary search WOULD be useful, which is incorrect.