X Marks The Dead Spot

I used to do computer consulting for several companies in my town. One day, a chiropractor hired me to figure out why his laptop wouldn’t work in one particular room.

I go over and look at the laptop. Sure enough, it gets a signal as soon as I walk out of the room, but loses it again whenever I walk back inside.

As I’m trying to work out what could possibly be blocking the signal, I notice a small cubby in the corner and a viewing window.

An idea dawns on me.

Me: “…Is this, by any chance, an X-ray room?”

Chiropractor: “Yes, this is our X-ray room.”

Me: “Is it shielded?”

Chiropractor: “Yep! Fully shielded against electromagnetic radiation.”

Me: “I have some bad news for you…”