If they didn't say so, how could the audience know?

But you are the important people and the audience knows that.

Now if only they weren't so intent on making sure the audience knows they're having a great time.

He then asked how many in the audience knew somebody with a gun.

If the audience didn't know who he was, they wouldn't see him coming.

In fact, half his audience may not know who he is.

But even if an audience knows, what does it believe?

The audience was afraid of something, but didn't know what.

The audience did not know what to make of it.

The audience of course knows that the impossible has not been made possible.