Abstract symbo—it's a lamp. It's furniture. You flick a switch and it lights up, it's not that co—

[wait. wait]

...Light. Right. Wow. [Apparently there's more completely done-ness to go around because she has managed to look even more exasperated; this includes a great big sigh and dragging a hand down her face.] Yeah, that's it. It's the light thing. Good catch. Wow.