@evan But the question was:
"Have you seen a lightshow at a planetarium".
So to answer yes, you need to have a "yes" on both. Boolean logic.
Yes and yes == yes
yes and no == no
no and no == no
The question wasn't:
*Have you seen a lightshow.
* have you been to a planetarium.
Accuracy matters :)
But, your poll, your rules :)
I'm just .. baffled.