Real Life Random Key Generator

(On my way into the office one morning, when I stop to get the mail, I see a key has been left inside for one of the package mailboxes. I go to open it and realize the key doesn’t even remotely fit for the box it indicates it’s for. I try the other one to be sure, but of course, it doesn’t work. There’s nothing to be done for it at the moment, so I take it with me to my office and explain to my boss. He says he’ll call the post office to figure it out. Later, he tells me what the mail person said.)

Boss: “They said they couldn’t find the right key, so they just left that one and hoped it worked.”

Me: “So… they don’t have the key to their own box, so they gave us a key on the one-in-a-trillion chance it’d somehow work?”

Boss: “Apparently.”

(I asked for more information, like maybe it was an old key or went to neighboring boxes and they hoped it was the same key, but my boss was under the strong impression that the mail person literally just grabbed a random key and slapped the box number on it. I’m still baffled months later.)