Science

The ghost of Enrico Fermi woke me up in my bedroom last night. 

I knew who he was because he said, "I'm the ghost of Enrico Fermi." 

I said that's nice and asked why he was there. 

The ghost of Enrico Fermi said he liked being in my room because it was dark. He said he couldn't see anything but he could feel the presence of the room. He said it was representative of the quantum state. 

I agreed, but said I found it more fascinating that he was dead and still doing things.