> You can make radio waves by touching the poles of a battery together with a wire.

You can. But making radio waves does not imply a broadcast. At least not in the traditional sense. I'll grant you that colloquially we have sometimes come to refer to any radio transmission as a broadcast, but that is not the usage here.

> BUT, if you don't know you are making radio waves are you still a broadcaster?

If you didn't know a chicken emerged from an egg, is it still a chicken? My experience with young children who don't yet understand that process would say yes. No doubt there are career radio broadcasters out there who are not familiar with the science of radio.

It's not about not knowing of the existence of something, though. We know the chicken came from an egg. We just don't know what kind of egg it was. Was it a chicken egg or was it a flibberdoodle egg? If it was a chicken egg, how did the flibberdoodle lay a chicken egg? If it was a flibberdoodle egg, how did a chicken come out?