Just had some engineer at work come to me and say:
"Where's my file?"
Me: "Have I ever used it?"
"No"
Me: "Do you remember where you saved it?"
"No"
Me: "DO you remember what its called?"
"No"
Me: "try the search feature"
"There's a search feature?"
me: *explains how to use search"
"Oh, OK, thanks"
5mins later
"I left my file at home, can you get it for me off the computer?"
Me: "No."