Vash nods slowly at the new information, he's going to remember everything and try.

Then Knives answers his question and he can't help but flinch, and then stare, wide-eyed, the questions there... well, he can't even voice them.

Then he looks up at the moon and stubbornly hunches his shoulders.

"I am not destroying parts of satellites to doodle smiley faces!!!"

Listen. He might consider it if the world is a place that is good and kind and just needs a bit more fun.