"Just like you can't fart in public and charge bystanders for the scent - you can't broadcast facts into the public and expect people not to recall them. I mean, you can. But good luck with that!
"
Do you also believe you can take the satellite tv signals beamed at your house and decrypt them? After all, they broadcasted them as widely as they possibly could! If they didn't want you to watch them, they shouldn't have sent it to you!
(This is a great in-theory argument that simply does not mesh well with our law in reality)