So it's happened to me multiples times and I want to throw out this paradox to you. I don't know whether this is an existing paradox (phrased differently), but here it is anyway.
This dilemma requires you to have to two things which are equally important. For the purposes of illustration, let's assume that you're at home, and that a) a very close friend is coming over sometime this afternoon BUT DID NOT SPECIFY EXACTLY WHAT TIME, and b) you need to go out to buy food for dinner OR ELSE THERE WILL BE NOTHING TO COOK AND YOU WILL STARVE.
Let's assume that you cannot buy food while your friend is over (because online delivery doesn't exist or something). Let's also assume that you can't bring your friend to buy dinner with you (because he/she is over from some exotic overseas location and isn't willing to spend time with groceries). While we're at it, let's also assume the absence of cloning, time travel, multiple universe theories, and handphones.
The dilemma goes like this: it's 3pm in the afternoon. Your friend has not arrived yet. You also have not bought dinner yet. You need to go buy dinner or you'll starve. But you need to be here to receive your friend. If you go, then you might keep your friend waiting for hours while you select the most exquisite piece of gourmet lamb shank. But if you wait for your friend, then your stomach acids slowly devour yourself from the inside.
So, here's the question: what is the best course of action here?
One will always wonder,
The Edna Man