The video is being made. Until it arrives, here is what it will say (117 words, about 58 seconds):

Here's a girl in a tent at night. A flashlight on the floor points at the wall. She makes a rabbit shape with her hand in front of it.

A rabbit shadow appears on the tent wall. Why is it on that side?

Now she switches the flashlight off. Everything goes black.

She holds her hand in front of her face, eyes wide open. But she can't see it at all!

Why not? Where did the light go, and why can't she see without it?

That's this topic: where light comes from, how it travels, and why you need it to see.

Okay, so are you ready to find out why you can't see in the dark?

It ends with a ready line. Then pick a reply below — any reply counts.