Logical riddle, not to detect.

[DarkOne]

What about the call to action?

[Bloopy]

The call to action would be the vacuum saying "Hi everyone, I'm a vacuum. Please expand into me!" Or maybe it's the quantum vacuum fluctuation, but then there was never really any nothing in the first place.

[DarkOne]

Think of something closer to home

[Bloopy]

Continuing with the space idea, is the call to action a stomach full of empty space begging for some food?

[DarkOne]

You are on a W:A forum after all